Showing posts with label evidence. Show all posts
Showing posts with label evidence. Show all posts

Monday, May 25, 2015

Critiques of Pure Arrogance Intellectual or Political?

by Gary Berg-Cross

Disciplined insincerity & confident ignorance are already evident in this spectacle we call the primary season.  Well it’s still the money primary I guess, but there is a steady effort to test market ideas for the later campaigns. It’s already evidenced an unhealthy dose of arrogance to go along with the insincerity & ignorance (not to mention those flashes & dashes of egoism, conceit, intolerance, sub-surface anger, quarter truths, & light, gossipy slanders.  

I’m thinking of, for example, of Former Florida Gov. Jeb Bush’s sharp-tongued & perhaps dimmer-witted comments.  These started at the winter meeting of the free market Club for Growth winter economic conference in February.  It was a good time to be Palm Beach, but perhaps too comfy an environment for well-reasoned arguments. I’m already tired of people who want-to-be-in-charge of things saying “I’m not a scientist” followed by an awkward opinion that back hands real scientific understanding out of the conversation. In Jeb’s case it was his opinion about climate change, an important topic for Florida and the rest of the world.  Ok, so you are not a scientist or an economist but why not get informed?  There are advisors.

Perhaps we can be disappointed but not surprised with the opinion, since he is very much a politician fitting George Bernard Shaw comment in Major Barbara :

“He knows nothing; and he thinks he knows everything. That points
 clearly to a political career.” 

But it gets worse, because Jeb was just starting on the not-being-humble path. More recently in New Hanpshire he upped the attack as one sees from the headlines:



It is one thing to be “not a scientist” (Re climate change.) and another to attack scientists for their inconvenient evidence, if not a good approximation of reality.  Why are they not to be believed?  Well their explanations are too complicated – he used the more manipulative work “convoluted” in comments reported by CNN.  Then we have the pithy punch:

“For the people to say the science is decided on this is really arrogant, to be honest with you,” ... “It’s this intellectual arrogance that now you can’t have a conversation about it, even.”

Well I think that was a swing at President Obama as much as at Science. He’s speaking up.  But it is easy to believe that the arrogance (perhaps anti-intellectual arrogance in this case) really dwells in those politically conservative people.  Sure, one can perceive strength as arrogance in fact-based people, who are right but the not believed. They have a lot to go on. Evidence-based belief comes from the various climate scientists who actively publish research, 97 percent agree that humans cause climate change. Further the U.N. Intergovernmental Panel on Climate Change
leveraging research  from ~ 800 climate experts across the globe,  concludes that  it is at least 95 percent likely that human activities are the main cause of atmospheric and ocean warming since the 1950s. Scientists speak in probabilities, how’s that for arrogance?  Well pulling math on you seems arrogant to some, I guess.

I think that the more dangerous arrogance is this.  It is the acted upon and emotion-centered belief of people who are wrong on the evidence (see above), don’t like testing evidence (what is the trend for the next decade?) and for one reason or another can't face this reality and projected reality.  This type of arrogance is manifested in Jeb's attack on the evidence based community and is especially true of political leaders who need to comfort the flock.


Unfortunately, this is just an early, primary season example of the attack on intellect, facts and critical thinking. We are likely to have more as part of 2015-16 silly season. I know that I will still be upset when I see  how many hands get raised this year when the candidates are asked about their belief/non-belief in evolution. Sort of a reverse American Exceptionalism demonstration.

Wednesday, April 04, 2012

Paleontologist Robert Asher's accommodationism

By Mathew Goldstein

In his Huffington Post article Science, Religion and the First Amendment, paleontologist Robert J. Asher writes "Never mind that the winning side of major U.S. court decisions supporting evolution in public schools has regularly featured experts who recognize compatibility between science and religion. If they are 'creationists,' then so was Charles Darwin." Unlike Darwin, these experts sometimes claim that ancient miracle stories, such as the resurrection and the divinity of Jesus, are true. These experts who claim compatibility between their own religious beliefs and science make arguments in defense of their claim that are in conflict with the overall evidence. In contrast, Darwin stopped attending church and stopped calling himself a Christian. He wrote "Nor must we overlook the probability of the constant inculcation in a belief in God on the minds of children producing so strong and perhaps an inherited effect on their brains not yet fully developed, that it would be as difficult for them to throw off their belief in God, as for a monkey to throw off its instinctive fear and hatred of a snake." Given the contexts that atheism was a crime in those days, and that we know so much more today about plausible materialistic mechanisms for origins than we did in those days, Darwin expressed views that hinted his beliefs leaned in an atheistic direction, even though he was a Christian as a younger man.

Robert Asher then wrote: "However, it is not 'creation' itself that conflicts with science, but the implication of certain processes (involving for example a ridiculously short period of time) by which this 'creation' took place." Although theists will deny it, the implications of our knowledge about the universe are also unfavorable for a creation of humans by deity process. The evolutionary process replaces the theistic God's role as creator of humans with biology and natural selection. To keep insisting that a god created humans is thus also similarly ridiculous. Theism requires almost as much mental gymnastics to refuse accepting the evidence to the contrary as does belief in young earth creationism.

Robert Asher continues: "Asserting that a deity is behind a given process leaves the material basis for that process completely open to further investigation." This is true to the extent the person making the deity assertion is willing to abandon that assertion if the evidence better fits the assertion that no deity is behind a given a process. Evolution is behind the process of speciation. So asserting that God is behind the process of speciation can, and sometimes does, close the material basis referred to as biological evolution from at least some further investigations.

Robert Asher then argues: "Analogously, regarding Thomas Edison as the inventor of the light bulb says nothing about how it actually works, and no reasonable person would conclude his non-existence from our understanding of electricity. In other words, understanding a natural mechanism is generally independent of a potential agency behind it." Obviously, there is no conflict between a scientific understanding of electricity and the existence of Thomas Edison. On the contrary, we are rationally compelled to believe in the existence of Thomas Edison because the evidence for his existence is very strong. But it would be wrong to assert that a deity is responsible for the light bulb instead of Thomas Edison and it is similarly wrong to assert that a deity is responsible for homo sapiens instead of biological evolution. We should always be following the evidence instead of contradicting the evidence. In other words, a natural mechanism can, and more to the point in this case, does, provide an explanation that functions as the agency behind something else.

Robert Asher then comments on the first clause of the 1st amendment of the U. S. constitution: "The U.S. constitution was written by individuals who viewed nature and its laws as consistent with the existence of a deity. I too believe in God, and am grateful to the framers for crafting a system by which religious beliefs cannot be legislated. Yet this constitutional assurance is double-edged because it seeks to balance the protection of society from popular superstition with each individual's right to religious expression. This balance lends itself to one of the most pressing issues of our society today: distinguishing superstition from religion, and ensuring that the right to believe does not cripple an understanding of our planet and ourselves." This is mistaken. Our laws speak for distinguishing religion from government. There is nothing at all about distinguishing superstition from religion in our laws, nor should there be. People are free to be "superstitious" and to express their superstitions via their religion. Insofar as such "mixing" is one of the more pressing issues of our society, it is a protected right of individuals under the second clause of the 1st amendment. Taking the superstition out of religion is like removing the water from lakes. Eliminate the former and the latter becomes nothing more than an artifact from the past.

Saturday, March 24, 2012

Atheism is not scientism

By Mathew Goldstein

Philip Kitcher, John Dewey professor of philosophy at Columbia University, in his recent New York Times article titled "Science is Unbelieving", identifies "scientism" as a major flaw in modern atheism. He defines scientism as "this conviction that science can resolve all questions known" including "questions about morality, purpose, and consciousness" and places this label, which he acknowledges is intended to be pejorative, on Richard Dawkins and Christopher Hitchens.

He then elaborates that scientism "rests on three principal ideas. The facts of microphysics determine everything under the sun (beyond it, too); Darwinian natural selection explains human behavior; and brilliant work in the still-young brain sciences shows us as we really are." However, none of these three assertions, neither individually nor in combination, imply that science can resolve all questions known. Everyone with any common sense, including modern atheists, recognizes that science is a human endeavor, that humans are limited to operating within the confines and limits of their location and time and abilities, and that humans never have, and never will, have access to all evidence about everything, everywhere, over all time, past and future. Accordingly, science does not, and will not, resolve all questions known. Indeed, all questions do not have answers because many questions have no relevance to what is true or false or are incoherent. The issue of what questions should be asked is itself an issue that can only be reliably resolved by following the available evidence.

And when we follow the evidence, as all rational people are obliged to do, the assertions that physics is “the whole truth about reality”, that we should achieve “a thoroughly Darwinian understanding of humans”, and that neuroscience makes the abandonment of illusions “inescapable", are not scientism, as Philip Kitcher asserts, they are simply the conclusions that arguably are most consistent with the available evidence. Those are short quotes that Philip Kitcher excerpted from a book by one particular atheist ("The Atheist's Guide to Reality: Enjoying Life Without Illusions" by Alex Rosenberg). He is using his critical review of that book as his launching pad for his more general attack against modern atheism. I have not read that book, but taking short phrases like that out of context is not conducive to fair criticism of the author's argument. I can imagine such short phrases appearing in paragraphs whose context gives them a more nuanced interpretation than Philip Kitcher appears to be trying to attribute to this author. Philip Kitcher clearly dislikes these sorts of conclusions, but his mislabeling these conclusions as scientism fails to demonstrated that they are "premature".

It is true that "very little physics and chemistry can actually be done with its fundamental concepts and methods, and using it to explain life, human behavior or human society is a greater challenge still. Many informed scholars doubt the possibility, even in principle, of understanding, say, economic transactions as complex interactions of subatomic particles.". But again, science is a human activity, and humans are limited in many ways. So none of these limitations in science as a human activity counter the conclusion that physics underlies the whole truth about reality. Quantum indeterminacy, the necessary incompleteness in the description of a physical system, is one of the characteristics of the universe as understood by modern physics. So even if some predictions are impossible "in principle", it still doesn't follow that it is mistaken to conclude that physics underlies the whole truth about reality. What Philip Kitcher derides as "imperial physics" makes complete access to the future forever inaccessible to us. Furthermore, nothing in basic physics requires that the properties of complex systems be identical to the collection of the properties of that system's constituent parts. It is well established in physics that entirely new properties sometimes appear in complex systems. Nothing about this emergent properties phenomena supports the conclusion that god exists. Philip Kitcher may not like that physics rules over us and the universe, but that doesn't make the evidence that it does any less convincing.

Philip Kitcher then disparages the generalizing from evidence to conclusions "unfettered by methodological cautions that students of human evolution have learned". Indeed, atheism is a generalization, not a conclusion of science. Generalizing from the evidence is something we all do. It is a basis for sound philosophy, so it seems kind of odd to hear a philosopher criticize such activity in such general terms. We need to make decisions on the basis of the available evidence, and since the available evidence often falls short of being complete in the context of answering the questions relevant to making our decisions, we generalize on the evidence. Shame on atheists for being like everyone else in this regard!?

Philip Kitcher then points out that "others hold the equally staunch position that some questions are so profound that they must forever lie beyond the scope of natural science. Faith in God, or a conviction that free will exists, or that life has meaning are not subject to revision in the light of empirical evidence." The first two questions are existence questions and the only reliable basis for answering such questions is by matching the answer against the available evidence, not on faith or conviction. The evidence disfavors both, and the people who argue that empirical evidence can have no relevance when trying to answer those questions are no less mistaken for being adamant. The last question is an attitude question. But even human attitudes, to be properly sustained, need to be anchored in facts and therefore should be built on a foundation of evidence, not on counter-evidenced possibilities such as God and free will. And what in the world does the measure of profundity have to do with a question being beyond the scope of natural science? Profundity is irrelevant here. Questions are either inside or outside the scope of natural science primarily in relation to the availability of evidence.

Not surprisingly, Philip Kitcher tries to divorce his attack against "scientism" from disrespect for natural science. He notes that "The natural sciences command admiration through the striking successes ....". But "... the natural sciences have no monopoly on inferential rigor. Linguists and religious scholars make connections among languages and among sacred texts, employing the same methods of inference evolutionary biologists use to reconstruct life’s history. Attending to achievements like these offers many alternatives to scientism." With that last sentence, Philip Kitcher appears to be implying that modern atheism (a.k.a "scientism") is inconsistent with "employing the same methods of inference evolutionary biologists use to reconstruct life’s history" in contexts beyond the natural sciences. This is nonsense. Modern atheists very much support and favor "employing the same methods of inference" on the empirical evidence beyond the confines of the natural sciences. Inferring from the evidence is what we are doing when we observe that the available evidences favor the conclusion that gods are human created fictions.

Philip Kitcher then asserts "Instead of forcing the present-day natural sciences to supply All the Answers, you might value other forms of investigation — at least until physics, biology and neuroscience have advanced." But that is what atheists are doing. Atheists look to psychology, to anthropology, to sociology, to history, to evidence grounded philosophy, etc., and the evidences available from all sources that relates to this particular question is consistent in its direction wherever we look. That is why we are atheists. This has nothing to do with natural sciences supplying "All the Answers", it is about the best fit with the overall evidence answer to a particular question. There are human tendencies that explain the common bias against accepting the evidences that our universe is all space-time and matter-energy, such as the tendency to internalize the beliefs of the people around us during childhood. Maybe in the future we will have evidence that our universe consists of something more than space-time and matter-energy, or maybe not, but it is a mistake to insist that there is also a god without the evidence.

Sunday, February 19, 2012

Theism is an existence claim

By Mathew Goldstein

Janet Daley, writing for the British newspaper Telegraph, cites the "clash between President Obama and the Roman Catholic Church over the matter of whether Church institutions should be obliged by federal statute to provide free contraception. There can be no question of where the Constitution stands on this issue: if a case should ever come to the Supreme Court, it is the Church that will win." in her article "A good week for the smiting of the ungodly". Did Janet Daley miss the news that the Obama administration granted religiously affiliated Institutions an exemption that allows their employees to acquire the contraception coverage from the insurance companies without employer subsidies? Any lawsuits would now be against the contraception coverage subsidy required for institutions not affiliated with a religious institution. Legal precedent says that government can enforce a "neutral law of general applicability" that conflicts with some citizen's religious beliefs provided that the law can be shown to benefit the general welfare of citizens.

She then points out that there are questions whose answer is not based on evidence such as: Is it wrong to hurt people unnecessarily? She correctly points out that it is a mistake to require evidence for "those kinds of belief that do not rest on empirical evidence but which are still central to human experience." She then incorrectly concludes that theists are therefore correct to believe without evidence. That final therefore is incorrect because theism is not one of "those kinds of belief" that is exempted from the need for empirical evidence. Claims that theism has moral benefits are derivative, they come after acceptance of the existence claim. Therefore theism is not a moral axiom like the axiom that it is wrong to hurt people. Theism is an existence assertion like the claim that God the Holy Ghost exists as part of a Holy Trinity. So atheists are correct to look to evidence for evaluating the merit of theism.

She then calls it "a very odd kind of obtuseness in people who clearly see themselves as possessing superior intelligence. Do they really not understand what it is that it is so unsatisfactory about “scientific” accounts which reduce life to the ticking over of sensory apparatus?". This is also mistaken. First of all, atheists really do understand that both theists and atheists posses a full range of intelligence. The difference here is that atheists are applying their intelligence better on this question. Secondly, accurate explanations do not "reduce" that which is being explained. Life continues to be exactly the same phenomena, neither enhanced nor reduced, by the availability of previously unavailable explanations for how it originated and evolved. The obtuseness here is on the side of people like Janet Daley who have this very odd notion that an explanation should be rejected if it is subjectively deemed to change the value of that which is explained in a direction that some people decide is undesirable. We are obliged to follow the evidence wherever it takes us. Since we are not the creators of the universe we don't have carte blanche to redefine the explanations to match our preferences. When a preference conflicts with the evidence the proper way to resolve the conflict is to abandon the preference.

Janet Daley then asserts about Dawkins "Most to the point was the comment that he had failed to “understand the nature of faith”. It is that incomprehension which is perhaps the weakest element in the scientific rationalist atheist case." On the contrary, the irony is that it is the atheists who understand faith better than those who live by it. If the people of faith acknowledged how vacuous this reliance on faith is as a source of knowledge about what exists then they wouldn't be so proud to publicly assert their beliefs are faith-based as if that was a positive attribute or sufficient justification.
.
In defense of faith, Janet Daley returns again to questions of morality, asking: "Why do they, and we, feel such unbearable compassion even for those unknown to us – even, indeed, for hypothetical tortured children who have been invented for the purpose of argument? Why is sympathy, and revulsion at the pain of others, such a characteristic feature of our condition that it is actually called “humanity” and its lapses regarded as “inhuman”? Presumably, the Dawkins lobby would say it arose from the need to preserve our collective genes. What an impoverished view of life and its moral complexity, that is.". Having previously mischaracterized the correct insistence that evidence be provided to support the existence claims intrinsic to theism as " facile atheism", it is actually Janet Daley who is the one being facile here. The explanations for moral sensibility, and life, provided by biology are rich. They combine a deep simplicity with incredible complexity, have broad implications, and are anything but "impoverished". Most to the point, we are justified in believing that this "view of life", unlike theism, is true because the evidence tells us it is true. And that is what counts here, everything else is hot air.

Tuesday, January 24, 2012

Why gravity is real but god is not

Christian Platt, in his recent article "Atheism: A Null Hypothesis on God", admits that "I have tried in vain over the years to understand atheism.". He then goes on to make various analogies for acquiring knowledge of various phenomena empirically, such as our seeing things from reflected light, and our verifying gravity by its effects, with his claims of witnessing god by god's reflections and effects. He, and other people like him, will continue to have difficulty understanding atheism because he is not understanding the difference between arguments based on empirical evidence and his arguments for god. This distinction is not difficult to grasp, and after understanding this distinction, he may come closer to his positive goal of "getting" atheism.

But first, lets dispell the unbalanced notion, which Christian Platt mistakenly promotes, that agnosticism is consistent with Christian theism but inconsistent with atheism. He appears to confuse uncertainity that god exists with faith that god exists, and since atheists don't have faith that god exists he concludes atheists are not agnostic. But all agnostics do not have faith that god exists. Not having perfect and direct knowledge that something exists does not equate with faith that it does exist.

Christian Platt is correct that everyone should be agnostic because humans are not omniscient. But he is incorrect to say that atheism precludes agnosticism. Richard Dawkins, for example, has acknowledged that he has such uncertainty. All atheists who are thoughtful acknowledge agnosticism. He also claims that atheism 'implies the same kind of certitude that a religious fundamentalist might claim is arguing they "know without any doubt that God exists."'. Some atheists may say that, but in my experience most atheists either say they don't believe and stop there, or say they believe there is no god, instead of saying they "know without any doubt". This notion of disbelief isn't difficult, and there is no good reason for intelligent people to have difficulty with this concept of disbelief in the singular context of god belief when everyone disbelieves lots of things. The real issue here isn't whether someone has any particular conviction, nor whether that conviction is definite or indefinite, nor whether the conviction is in the middle, or towards one end, of a true versus false spectrum line. The real issue is whether the belief, or disbelief, is well justified and held in proper proportion to the evidence.

Christian Platt then approvingly quotes John D. Caputo for his argument that God belief "insists, so that the rest of creation might exist.". This sounds like an argument that the universe must have a creator. That is a dubious assumption. For example, insects exist, but they do not have a creator. Insects exist because of abiogenesis and evolution. Some cosmologists think that the universe was spontaneously created, or self-created, and most cosmologists think that a self created or spontaneously created universe is consistent with all of the known laws of physics. While the notion of a creator is intuitive, we know from the very long list of non-intuitive and counter-intuitive conclusions found within modern knowledge, that intuition is not a good guide to, let alone a good source of, knowledge.

Christian Platt then declares: 'God is the impetus, the spark, the divine breath, the "inspiration," if you will from which all the rest of creation finds meaning.' I think this is silly, and I will try to explain why. Meaning is found in our experiencing and living our lives. Merely declaring otherwise does not constitute a justification for claiming otherwise, let alone constitute a compelling argument for a god. The notion of creation finding meaning makes no sense. There is no meaning to be had outside the context of minds capable of contemplating the concept, and all such minds that are known to exist reside in physical brains that are attached to physical bodies of animals. Saying that "creation finds" a concept or sentiment, such as meaning, is a category error. This is poetic language, but evidence and argument is not found in poetry. If it were then we would go to poets instead of medical doctors for our annual medical health checks.

Christian Platt then argues that God is found "conspiring with the physical world to create something that makes sense." Here is where he indulges the flawed analogy with seeing an object indirectly as "the result of the interaction between the light and the observed object.". Light is a physical entity that is measurable, it has amplitude and wavelength, it is empirically observed and evidenced. This is very different from the assertion about the vague concepts "something that makes sense" and "conspiring". This analogy doesn't work at all, since the foundation of our knowledge in the second case is precisely the empirical evidence that is completely absent in the first case.

Christian Platt then tries to argue that empirical evidence is not necessary because in the past we didn't know about atomic particles, or dark matter. He appears to be confusing what we know, a.k.a. ontology, with how we know, a.k.a. epistemology. It would be nice if we could just eliminate the effort and time needed to acquire knowledge and magically skip to having knowledge through some unspecified direct mechanism to this particular truth claim (god). However, such magical and instant capability to directly possess knowledge has not demonstrated much success as a non-empirical, alternative method for acquiring knowledge. There is a time sequence constraint here that applies to everyone. Time travels in a single direction from past to present to future. Before we can have knowledge about what is true we must first obtain the evidence to justify the conclusion that it is true. The latter achievement precedes the former achievement in time, we cannot properly leap directly to a conclusion without the evidence needed to justify the conclusion.

Christian Platt cites gravity a second time, saying it 'cannot be directly observed: only measured as it affects other objects. It's not a "thing" that can be pinned down.'. Gravity is due to curvature in space-time, and space-time curvature is a thing that can be, and is, predicted and indirectly measured. It is true that all empirical measurements and observations and knowledge can be said to be indirectly acquired. But the critical and essential attribute of evidence is that it is repeatedly measureable and observable, attributes that are entirely missing from poetic "evidences", if we can call them that, for god. Even if it is true that everything that is empirically evidenced is evidenced indirectly, it doesn't follow that everything that is argued for indirectly is therefore also properly evidenced.

Christian Platt then asserts "to say that even science is entirely constrained by the scientific method is to ignore the creative imagination required to stretch the boundaries, to imagine what might be, beyond what is now understood to be. It's this kind of imagination that pushes humanity to create new tools that have allowed us to observe things we never knew existed before.". The notion that atheists define the scientific method so narrowly as to preclude a role for imagination is false. Imagination, when married with empiricism, can be an important contributor to getting productive ideas. But imagination is no substitute for grounding existence claims in empirical evidence. Undiscplined imagination unfettered by empiricism has been a path to much fictional fantasy falsely claiming to be knowledge. There is excellent reason to think that imagination by itself is a source of fiction only.

Christian Platt then argues "making room for those possibilities, seem, to me, to be at the heart of science as much as the rigorous processes defined by the scientific method.". If by "those possibilities" he means all of the possibilities that have no empirical support then the fact is that the scientific method does not endorse, and cannot arbitrarily endorse, any such possibilities. But the issue here is not "scientific method". The issue is the need for empirical evidence in support of existence claims to justify the corresponding existence beliefs.

The article concludes with this comment: "However, to leap from that to certitude of God's non-existence is to violate the principles of the scientific method, isn't it?". Explicit atheism is not a conclusion of science. It is a belief based on an assessment that the overall direction and weight of the available evidence favors the conclusion that there are no non-material actors with non-material super intelligent minds that created the universe or that take some special interest in humans or that intervene, monitor, or oversee human affairs on earth, nor that humans continue to live forever as material or non-material entities after they die under circumstances dictated by such a god, nor anything of this sort. Instead, the available evidences best fits the conclusion that all god stories are human created fictions that have no relationship to anything that is true.

Tuesday, January 17, 2012

The incomprehensible, everything good, god

By Mathew Goldstein

When I wrote, in my previous post, that theists argue for irreducible complexity in biology as evidence for god, I was not (of course) referring to all theists. So what about a god that is not to be found in biology, chemistry, or physics? Victor Udoewa, in his recent Huffington article titled "Does Science Make Belief in God Obsolete?", wrote "it is clear that science may make belief in a certain concept of God obsolete. But it is a hard task to make belief in every concept of God obsolete.". Seeking funding from the Templeton Foundation to promote his timeless and undefeatable version of theism, he asks: "What if there were concepts of God that had something to offer or add to the fulfilled? What if we had concepts of God based on creativity? On a positive definition of incomprehensible peace? On imaginative joy? On creative, problem-solving love?"

The god that is creativity, peace, joy, imagination, love, and other such general and positive capabilities, outcomes, feelings, and sentiments is a favorite gambit of liberal theists. Its strength is its weakness, in equal measure. There can be no evidence against this god nor can there be any evidence for this god. This god is claimed to be real but is defined as a fantasy. And that is why no one has any proper justification to believe in this god. Evidence is the proper foundation to justify beliefs about what is true or false regarding the reality of entities that are to be worshipped or otherwise asserted to really exist. Conservatives want evidence, but they don't respect evidence that contradicts their theism, so they tend to manufacture their own, alternative world "evidence". Liberals want to follow the real evidence, but they don't want the evidence to contradict their theism, so they tend to place their cherished theism out of harms way by defining their god to be beyond the reach of any possible evidence. Either way, it's the same failure, they are both failing to put the evidence first and follow it.

Friday, January 13, 2012

Free will and fine tuning

By Mathew Goldstein

There is good reason to think that we do not have free will and that the fundamental constants of physics are not fine tuned. Some people defend theism on the grounds that both phenomena are evidence that naturalism is insufficient to describe or explain the universe. So the evidence that both are false assumptions has some significance in the debate over whether or not we should believe that there are no gods.

I will utilize biologist Jerry Coyne's definition of free will: When faced with two or more alternatives, it's your ability to freely and consciously choose one, either on the spot or after some deliberation. A practical test of free will would be this: If you were put in the same position twice — if the tape of your life could be rewound to the exact moment when you made a decision, with every circumstance leading up to that moment the same and all the molecules in the universe aligned in the same way — you could have chosen differently.

If we had free will then we would be self-aware of the action we have selected before we have irreversibly committed to that action. If our choices are unconscious, having been determined well before the moment we think we've made them, then we don't have free will in any meaningful sense. Scans of brain activity favor the latter scenario. First we irreversibly commit to an action and we become aware of which action we are taking only after the decision was made. For example, brain scans show that when a subject "decides" to push a button on the left or right side of a computer, the choice can be predicted by brain activity before the subject is consciously aware of having made it. We then convince ourselves post-hoc that we decided on our action after conscious deliberation. Thus, our feeling that we consciously choose may be a deeply ingrained and automatic self-deception, a trick our mind plays on us.

In his new book "Who's in Charge: Free Will and the Science of the Brain", neuroscientist Michael Gazzaniga explains how the right brain hemisphere is driven by the senses and acts on an immediate, subconscious level. The left brain hemisphere applies a conscious after-the-fact reasoning that attempts to make sense of the actions that the subconscious mind has already taken. The left-brain's "interpreter module" is always at work inventing theories to "explain" what the right half of the brain has already "decided" on the basis of reflexive subconscious instinct.

Our intuition that we have free will is very strong. The concept of free will is fundamental to the way people assign meaning to their lives and is perceived as continuously being in play except when we are sleeping. But from a biological perspective, conscious self-awareness of actions came later in the history of life. Life originally selected among alternative available actions without self-awareness. So it makes sense that animals which later acquired conscious self-awareness still tend to make decisions prior to being self-aware of those decisions.

The premise of the fine-tuned universe assertion is that a small change in several of the dimensionless fundamental physical constants would result in a universe that cannot support life. The current standard model of particle physics has 25 freely adjustable parameters. However, the standard model is not mathematically self-consistent under certain conditions, so most physicists believe that it is incomplete. In some candidate replacement theories, the actual number of independent physical constants may be as small as 1. But, for the sake of argument, let's accept that there are 25 and that a small change to any single one of these constants makes the universe radically different.

Fine tuning can be cited as evidence for an intelligently designed universe only if the probability that the universe would be able to support life is tiny over the entire spectrum of all possible combinations of all possible values of all the constants. Even if the fine-tuning premise were true, there is theoretical evidence for a multiverse which provides a naturalistic explanation for fine-tuning. But is the premise true? Varying the value of just one constant while leaving all of the other values at their actual values may result in no other universe that can support life. Yet varying the values of all 25 constants simultaneously may result in many universes that can support life. The former result can thus be misleading, because the latter result, if true, would outnumber, and thus defeat, the former result.

Simulating universes while simultaneously varying the values of all 25 constants may be computationally very difficult, but several attempts have been made with a subset. Victor Stenger has simulated different universes in which four fundamental parameters are varied. He found that long-lived stars could exist over a wide parameter range. Fred Adams has done a similar study to Stenger, investigating the structure of stars in universes with different values of the gravitational constant, the fine-structure constant, and a nuclear reaction rate parameter. His study suggests that roughly 25% of this parameter space allows stars to exist.

So the free-will and fine tuning arguments may both be wrong. Certainly, both arguments have been premature in the sense that neither phenomena has been established to be true by the evidence. It is only very recently that we have acquired the tools to start to tackle the question of whether these two premises are true. The early results suggest both premises are false.

Saturday, July 23, 2011

Is atheism a belief?

By Mathew Goldstein

John Loftus argues that "atheism therefore is not a belief ..." in a 7/22 post titled "Once Again, Atheism is Not a Belief Nor a Religion" on his blog Debunking Christianity. This is wrong. Atheism certainly can be, and often is, a belief. Also, implicit in this argument that atheism is not a belief, which is usually made by atheists on behalf of atheism, is a mistaken notion that having beliefs is bad. Belief is an essential means to an end and as such a belief can be wrong or right, justified or unjustified. However, belief as a phenomena has no intrinsic property of being bad or good.

Beliefs are the basis for our making our decisions. We plan for tomorrow because we believe that tomorrow will follow after today. Beliefs are a property of being human. Every educated adult has thousands of beliefs. We are arguably born with certain basic beliefs, a result of evolution giving us the means to navigate our world and survive to eventually become experienced, educated adults. We can't eliminate the phenomena of beliefs anymore than we can eliminate the phenomena of chemistry and physics.

Mr. Loftus appears to incorrectly equate beliefs with religion. I think it should be obvious that while religion is rooted in beliefs, many beliefs have nothing to do with religion. Mr. Loftus is correct when he says that atheism is not a religion. Indeed, modern atheism tends to have an anti-religion orientation. Serious followers of ancient philosophical Eastern religions that were initially atheistic have tended to add theistic beliefs to those traditions whereas today's atheists are probably going to be less likely to take such religious traditions seriously as having any special merit over more modern and competing philosophies that are better rooted in modern knowledge. But it doesn't follow that atheism is not a belief.

Atheists can, and do, believe that there are no gods. I don't think an insistence that everyone say we don't believe in gods and stop there is either realistic or proper, nor is doing that what atheism is all about. When the overall direction of evidence weighs in favor of a conclusion we shouldn't shy away from that conclusion just because by asserting a conclusion we are taking sides. There is nothing wrong with taking sides. Having a belief, as long as the belief is properly justified by the available evidence, is not a mistake, its not a problem. The mistake, in the context of holding beliefs, is not following the evidence, which is synonymous with having unjustified beliefs.

Having no belief where a belief is justified is thus also a mistake. The evidence always comes first, the belief is compelled from the evidence. We don't choose our properly justified beliefs. The evidence chooses our beliefs, all we can do is follow. If we find that the evidence is positively against X then it follows accordingly that we positively believe that X is false and we should say so. Refusing to take a position in the name of having no beliefs is not a way of upholding an ethical value. On the contrary, its the mirror image of the mistake of having a belief where no belief is warranted and is equally wrong.

People who don't take the disciplined approach of basing their beliefs in the overall evidence, people for whom adopting belief is a method of self-defining oneself, are going to be promiscuous in adopting beliefs. Anyone who embraces the notion that it is one of the highest virtues to rely on faith, and thus important to avoid being constrained by the evidence, is clearly taking a promiscuous approach to adopting beliefs. Taking such a promiscuous approach to adopting beliefs is a mistake simply because we have excellent reason to think beliefs not anchored in the evidence are most likely false. While it is true that we do define ourselves in part by our beliefs, it doesn't follow that we should adopt beliefs for the purpose of defining ourselves. On the contrary, it is a common, and big, mistake to adopt our true/false beliefs about how the world beyond ourselves functions for the self-centered, inward focused, purpose of self-definition.

We should be trying to hold our beliefs in proportion to the evidence, without bias, so that our belief is weaker where the evidence is ambiguous and our belief is stronger where the evidence is unequivocal. If we see no direction to the evidence with respect to answering a question then we should have no belief. Sometimes we need to make decisions, but the need to make decisions doesn't always correspond well with the availability of relevant evidence. So in those situations we may need to rely on intuition, on faith, and the like. Due to the misfortune of such necessity, we rely on intuition, as an inferior fall-back, to make decisions. As a practical matter, we are often operating with incomplete and/or ambiguous evidence. Also, the available evidence can be misleading. So some humility regarding what we know is called for. A common mis-perception is that atheism requires unwarranted certainty, when in fact atheism only requires that the overall weight and direction of the available evidence favor the conclusion that there are no gods.

It is common to refer to non-believing atheists as weak atheists and believing atheists as strong atheists. The terms weak and strong suggest a strength of conviction continuem, but this is more of an either one or also the other choice (believing atheists also don't believe there is a god, we just don't stop with that). I prefer the terms implicit atheist and explicit atheist. The non-believing atheist is an atheist implicitly while the believing atheist is an atheist explicitly. In practice, as demonstrated by Mr. Loftus's blog article, implicit and explicit atheists don't necessarily have any real disagreement about the overall direction of the evidence. Mr. Loftus actually states in his article that "the evidence is against that belief", he just isn't willing to acknowledge that when the evidence is actively against an assertion then we rationally believe the assertion is false, we don't normally or properly stop at merely refusing to believe the assertion, nor should we stop there.

Sunday, April 10, 2011

Evolving Spring: Plant and Animal Vulnerabilities to Climate Change

Why do many of us believe that there is a serious problem heading our way called climate change? It's not a matter of blind faith. Like evolutionary theory it is an increasingly supported hypothesis based on a commensurate body of evidence. "Plants earlier bloom times hurting some creatures" reads the title of a recent Washington Post article by Brigid Schulte. See http://www.washingtonpost.com/local/plants-earlier-bloom-times-hurting-some-creatures/2011/04/08/AF42He4C_story.html. It goes on to describe field botanists' surprise that some flowers like “Dutchman’s breeches” and cut-leaved toothwort are blooming 2 weeks early. The culprit is global warming:

"Bloom hunters like Fleming, who for 40 years have been tramping through the woods, roaming along riverbanks and scrambling over rocky outcrops to document the first blooms of spring in the Washington area, worry that what they have been seeing is nothing less than the slow, inexorable shift of global warming.

They even have a name for it: season creep. And it’s happening all over the world."

Some causal evidence is experimental and comes from labs. A recent Science Friday show (http://www.sciencefriday.com/newsbriefs/read/200) made this point citing data from the University of Melbourne on the Australian common brown butterflies (heteronympha merope). They are emerging from their cocoons an average of ten days earlier than they did 65 years ago. The researchers attribute the butterflies’ early appearance to warming temperatures in the region. To test this they raised caterpillars of the common brown butterfly in a lab and then measured how quickly they emerged when exposed to different temperatures. The warmer the temperature, the earlier the butterflies took flight. They then used these measurements along with historic records of air temperatures around Melbourne, which rose about .25°F per decade, to predict when the butterflies emerged each year. Their predictions closely matched recorded observations. They concluded that:
"warming temperatures are coaxing the butterflies around Melbourne from their cocoons earlier each year, at a rate of about 1.6 days per decade."
(Photo by Flickr user Ibsut.)

The researchers believe the change in temperature is the result of human greenhouse gas emissions, not climate variability. A steady trend supported by 40 consecutive years of research at the Rocky Mountain Biological Laboratory also shows a warming trend. Flowers are blooming a month earlier than just 10 years ago. This is not all good for them, since some bloom early enough to be killed off by a late frost. That's another part of the problem, a trend towards greater weather variability. That's something easy to intuit since things are changing to a new normal. See http://www.sciencefriday.com/blog/2011/04/2031/ for a long list of evidence for climate change.

Biological warning signs of change are numerous and easily documented since many cultures have finely tuned agriculture to depend on spring for a release from winter famine. Cultures like the Korean have long records of when the first cherry blossoms of spring arrive and there is a 300 year European record on when grapevines bloom since planting time is critical to a good harvest.

A summary graphic in the Post shows how many plant species in the DC area are"creeping earlier" into spring. Bad for us, and it also has worrisome consequences for the naturally evolved plant and animal world. Evolution has fine tuned seasonal timing for many species. Our local squirrel population is dependent on the nut harvest to get them through winter. They have a frantic winter breeding seasons where females are in estrus for just 8 hours, but it results in spring-born squirrel babies (March to May) when there is again a natural supply of food. But some species in the complex chain of interdependence have been unable to keep up when seasonal timing is off.

In Europe, the leaves of the English oak are coming out earlier and this is OK for some animals. The winter moth caterpillars that feeds on them are also coming out earlier. But the pied flycatcher birds that eat those caterpillars aren't year around residents. They are migrating north at that time. Now when they arrive, many of the the caterpillars have already turned into moths and have flown off. It's a delicate ecological balance and changed timing has resulted in a severe decline of flycatcher population in recent years.

In San Francisco, some butterfly populations like Edith’s Checkerspot butterfly are simply gone. With the gradual warming of Earth and ocean temperatures that has also shifted rainfall patterns, the leaves of the plantago plant come out earlier. The leaves, which the checkerspot caterpillar depends on for food, are already dried and withered by the time the larvae emerge.

It's a deadly problem for migrating and seasonally dependent animal species. Even the largest creatures alive on the planet are affected - giant trees like our redwoods. A recent study finds that declining fog cover on the California's coast could leave the state's famous redwoods "high and dry." Among the tallest and longest-lived trees on Earth, redwoods grow where the summer fog provides water. But the fog is diminishing and climate change seems to be contributing to this decline in a high-pressure climatic system that lingers on the coast. See http://news.nationalgeographic.com/news/2010/02/100215-redwoods-california-global-warming/+.

Plant evolution has produced wonders, but unlike animals, they can’t just get up and relocate. The speed of change is something that vast numbers of species may fall to. Something to think about amidst this year's blossoms.