“The aim of life is to pass on one’s genes”, says Mr Worstall, adding that “we are told by the scientists” that it is so. [1] Well, randy scientists might tell him such things, but science — as knowledge only of the empirical-mechanical aspects of the world — does not. Aims, goals, purposes, etc, of any kind are outside its scope. To say that life itself has an aim of any kind is to impute to it a teleological nature, upon which science by itself is utterly silent. It ought to be obvious that the claim, to wit, that the aim of life is to pass on one’s genes, is not a scientific hypothesis, since it is not in any way verifiable or falsifiable. It is a metaphysical view in that it draws from the data of the physical world a conclusion which is not itself verifiable or falsifiable by the data thereof. [2] As a metaphysical view, it is open to rational disputation, wherein one may take into consideration whether it helps us, or is necessary for us, to make sense of the world, whether it accords with our experience, whether it is rationally coherent with our other claims, whether it leads to the denial of inconvenient facts, and so forth.
.....In speaking merely scientifically of so-called natural causes and laws, we are speaking only of the routines of sense-experience, as Karl Pearson phrased it, and not of some necessity or enforcement. All scientific laws and described regularities, taken merely scientifically without metaphysical insight, describe simply how things have behaved according to past sense-experience. Science, in the ideal-empirical state of having been stripped bare of all metaphysical insights, cannot claim any knowledge outside of the empirical-mechanical aspects of the world: “chaos is all that science can logically assert of the supersensuous”. [3] But if we are to think of order, causation, rationality, intentionality, teleology, and so forth, whereby we make sense of the world, then we must accept that our understanding of the world is something above a mere regular sequence of sense-impressions.
.....It is the spirit of positivism, however, which has the ideal-empirical state as its end for human thought as a whole. If a man ever achieved that state, he would become at that moment a brute. Perhaps then, having renounced his rational nature, his sole aim in life would be to pass on his genes, perhaps even as does the lowest life-form; and, having achieved his aim, he would spend his later years aimlessly writing popular-science books.
[1] Tim Worstall, “
This is Absurd”,
Tim Worstall (weblog), 19th September 2009.
[2] Even Richard Dawkins seems to be aware that his gene-centric view is not a scientific hypothesis: “I doubt that there is any experiment that could be done to prove my claim.” The Extended Phenotype: Gene as the Unit of Selection (London: W.H.Freeman & Co Ltd, 1982), p.1.