Science and Faith, Part 3 (What Are the Limits?)
In my last post, I mentioned some specific scientific advances in an effort to illustrate the limits of the conclusions that can be made through scientific inquiry. The idea of the limits of science is one that merits a bit more discussion.
For the sake of argument, let’s assume that macroevolution is somehow verified empirically. One could then safely conclude that man is the result of genetic change over the span of millions of years. However, many of the descriptive terms often used to describe the process of evolution would still not necessarily apply. The key issue is that of purpose. One often hears the mechanism of evolution described as ‘blind chance,’ or ‘random processes,’ yet we have no basis upon which to assume that it is, in fact, a purposeless phenomenon. It is in this case that the non-teleological assumption is imported, rather than legitimately inferred by the evidence. In other words, even the unlikely confirmation of evolution would not legitimately lead to the conclusion of atheism.
A simple example might help to illustrate this point: Suppose that you walked into your kitchen to find a kettle of water coming to a boil on the stove. You could rightly conclude that the water was boiling because it had been placed in a vessel which had been heated to the point that the water molecules are activated. However, without speaking to the person responsible, you would have no means of determining why the kettle had been placed on the stove in the first place. Yet it would be ridiculous to conclude that the kettle had been filled and heated by random and purposeless chance. (While I am not trying to make a strict analogy between the kettle scenario and evolution, as the properties of the kettle scenario are within the context of human decision making, I am suggesting that the conclusion regarding purpose is equally unmerited in both.)
Neither can the notion of the value of human life (not to mention the value of all life) be discussed in scientific terms. Value is a moral assessment that has little to do with empirical facts. Take, for example, the process of adoption. For any family considering or going through this process, the issue of cost will inevitably factor into the decision. Often, the process can cost well over $20,000. Yet, many would agree that suggesting that this new member of the family’s value could be accurately assessed in terms of a dollar amount is not only in poor taste, but quite incorrect. This is because value is not an empirical measurement, but a moral one. I would even dare to suggest that the entire concept of adoption is an adequate proof of the general agreement on the part of humanity that life is of high moral value. Otherwise, why would anyone desire to extend the family non-biologically, either for his or her own benefit or for the benefit of the parentless child?
Evolutionary scientists might argue that value should be a factor of cognitive function. Perhaps this is what causes scientists like Richard Dawkins, among others, to advocate for the extension of human rights upon primates. However, this seems wholly capricious for several reasons. First, on what basis is cognition evaluated? Though primate behavior appears quite similar (though primitively) to human behavior in many ways, many behaviors also indicative to high cognitive ability are found in other animals as well. For example, some species of birds exhibit sophisticated vocal ability (though I do concede that there may be more mimicry in this case than linguistic ability). Other animals, such as dolphins and pigs, are often extolled for their intelligence. But in all cases, the level of intelligence is often explained in terms of instinct and stimulus response, which provides the key to discerning between human and animal behavior.
For example, ant communities are quite complex and use communicative behavior far different from our own. A ‘scout’ will venture out for food, and will send a ‘radio’ signal out when it is found. The others will follow that signal (and the exact path of the ‘scout’) to retrieve the food. We humans require roads with rules, large colored signs, and even maps and directions to navigate. Yet, human behavior far surpasses the stimulus response of ants. Education is a prime example, as the educated become educators. One might spend years endeavoring to teach sophisticated behavior to a primate, yet I strongly suspect that expecting that primate to, in turn, teach others would be futile.
These issues do not lead to the scientific conclusion that humans have inherently more value than animals. However, they do confirm that pioneering for primate rights is scientifically arbitrary. Value is a non-scientific factor that can inform scientific investigation but cannot be determined by it.
Finally, if value and purpose cannot be scientifically determined, neither can behavior. To clarify, behavior can be observed scientifically, but to suggest how one aught to behave is another matter. Like it or not, mankind expects a certain kind of behavior of itself. I need only to point to the local courthouse or penitentiary to prove this point. Consider this: If a bird sets up shop and builds a nest in your garage, it would be absurd to haul the creature into court and charge it with trespassing. Clearly, the bird has no idea about such concepts and is merely following its instinct toward survival. However, if a human did the same thing (minus, perhaps, the nest), it would be another matter! This is because we believe in the rights and responsibilities of mankind. We may have the ‘golden rule,’ however I would challenge any scientist to produce convincing empirical data explaining the origin of it.
I actually believe that by delineating the limits of science, science is now free to proceed undeterred by extraneous considerations and will be more effective. Philosophy is suited to governing science such that it is calibrated to gather information successfully and without harm to society. Yet, clearly science has no ability to govern philosophy in the same way.