Atheism and the Scope of Skepticism
Wednesday, October 28th, 2009Despite the obvious commonalities between the two groups, the atheist movement has always had a rather strained relationship with the more generalized skeptical movement. In part this is the fault of organized atheism, as many atheists endorse mystical crap like acupuncture and other alternative medicines while pretending to be reasonable just because they reject religion. However, the real schism between the two groups is a result of the unfounded idea that atheism, at least in some forms, is not sufficiently scientific. Those skeptical movements that disassociate themselves from atheism tend to see atheism as a philosophical outlook rather than a scientific or empirically justified stance. The arguments in support of this claim, though, tend to be rather unconvincing.
Most forms of atheism address conceptions of God that are explicitly amenable to scientific tests. The bulk of religious believers, for instance, do not believe in obscure deistic entities that never interact in the physical world. They believe in a God that can manifest itself as a human being, perform miracles, heal sickness, control the vocal cords of those filled with the holy spirit (though God seems to take some perverse joy out of using those vocal cords just to speak in jibberish), and so on. Even those deities that are a bit more remote and do not perform miracles of this sort are nevertheless testable, as they are said to be creators of the universe and to have placed humanity on top of some sort of cosmic hierarchy of importance. These are all characteristics that yield testable hypotheses, and when our observations do not support these hypotheses, we have scientific grounds for rejecting these religious claims. When we see that humanity is the product of random forces whose existence is not probable, much less logically necessary, that throws serious doubt on any conceptions of God who created the universe with humanity as its pinnacle achievement.
In that sense, then, atheism is indeed scientific. Most forms of God can be ruled out on a purely evidentiary basis, in much the same way a scientist would rule out similar scientific hypotheses in other fields. This is generally accepted, even among those skeptics who feel atheism is a philosophical stance rather than a scientific one. The problem, naturally, is that some forms of God cannot be ruled out in this manner. These versions of God are so remote and deistic that they yield no testable predictions or observations of any sort, and thus, the skeptics would argue, they are not susceptible to scientific investigation. Massimo Pigliucci recently made an argument of this sort in a blog post titled “On the Scope of Skeptical Inquiry“.
Pigliucci acknowledges that some religious claims about God are scientifically testable, but in the end maintains that atheism is primarily a philosophical position because it addresses claims that can’t be assessed scientifically through the process of observation. One of the examples he gives is the claim by some creationists that God designed the world to look as if it were billions of years old when it is in fact only 6,000 years old. No evidence could contradict this kind of statement, obviously, and as such Pigliucci claims that it can only be assessed on philosophical, not scientific, grounds.
The problem, of course, is that this could extend to any realm of inquiry traditionally seen as within the scope of skeptical inquiry. If believers in cryptofauna like bigfoot and Nessie protected their claims from inquiry by saying, such as they do, that we would not expect to see evidence of their existence even if we looked, clearly we cannot scientifically address such a claim. Nevertheless, no skeptical organization is thus busy rewriting its mission statement to exclude cryptozoological investigations from its scope of inquiry; atheism, on the other hand, is singled out for just this reason. If the basis for rejecting atheism as a form of scientific skepticism rests on the unfalsifiability of religious claims, then any other field of skeptical inquiry is open to the same sort of criticism, as those who believe in alternative medicine, creationism, psychic powers, and ghosts frequently make claims that are unfalsifiable.
With that said, the other problematic aspect of rejecting religion as a field of skeptical inquiry concerns the overly narrow conception of “science” endorsed by such skeptics. Science isn’t just a process of simple falsification of claims. It is much more nuanced and much scientific activity is philosophical. Pigliucci tries to differentiate science from philosophy in noting that scientific knowledge seems to progress whereas philosophical knowledge seems to stagnate on the same unanswered questions. This is an uncharitable characterization of philosophy, though. Science itself is one of the ultimate successes of the progress of philosophy! The early Greek philosophers weren’t simply asking questions about souls and free will, but were addressing questions of the natural sciences. The scientific method is merely an epistemological and philosophical framework. The reason philosophy doesn’t seem to progress isn’t because it is not successful, but because when it is successful it becomes renamed as science!
So, in a sense, the demarcation between science and philosophy is not clear. Nevertheless, even if we accept the demarcation, it is clear that scientists do entertain and reject untestable hypotheses all the time. Science isn’t simply a matter of testing reality against observation, but it also puts into practice epistemological principles like Ockham’s razor. For example, basic philosophy of science shows that theories are always underdetermined by the data. That is, for any set of data, an unlimited number of potential explanations exist that would also fit the data. Evolution explains the data we see for the origin of human beings, for instance, but so does a hypothesis stating that the universe and human beings popped into existence two seconds ago with only the appearance of age. Scientists reject all the other potential explanations, even though they can cohere with scientific observations, because they are untestable or not parsimonious. Notice that scientists do not reject these alternative explanations after observing evidence that the additional elements of these hypotheses do not exist! They are rejected for epistemological, and hence philosophical, reasons. In this case the principle of rejecting untestable claims serves as a check against the tendency of human beings to make mistakes and err. The more you assume, the more likely you are to be wrong, and thus scientists assume the least that is justified by the evidence. As can be seen, the principle of parsimony is essential to science, because it cuts through problems of underdetermination by requiring evidence for additional explanatory entities. As such, scientists do not claim the origin of humanity is not within the scope of skeptical inquiry merely because untestable hypotheses can be generated to “explain” our origin. Scientific inquiry is not so constrained or feeble and frail that it cannot overcome untestable hypotheses. This includes untestable hypotheses of a religious nature.
In short, the attempt to form ghettos of critical inquiry that exclude atheism from skepticism are misguided. It would be as misguided as randomly excluding cryptozoology or alternative medicine merely because their supporters also make untestable claims. Scientific analysis is always dealing with untestable claims. Any theory accepted by scientists entails the rejection of countless untestable claims compatible with the underdetermined data set. As such, rejecting untestable claims, whether they be religious in nature or not, is thoroughly scientific. For the skeptical community to attempt singling out atheism for this reason thus seems silly and disheartening, especially knowing that it is likely motivated by the unfounded respect (which entails a lack of criticism) traditionally accorded to the religious. I suspect that had we evolved in a parallel universe where cryptozoology was the reigning belief system, and we were all socialized to respect claims about Bigfoot and never criticize them, then we’d be seeing skeptical movements decrying the inclusion of cryptozoology within its scope. Luckily, we do not live in that universe. And hopefully we can change our current universe from one in which the skeptical community attempts to exclude atheism to one in which skepticism of religion is just as acceptable as any other area of inquiry..