Only those endowed with impulses serviceable to their preservation survived and could propagate their species. We are not prevented from assuming that in the long way that led from the nonhuman ancestors of man to the emergence of the species Homo sapiens some groups of advanced anthropoids experimented, as it were, with categorial concepts different from those of Homo sapiens and tried to use them for the guidance of their conduct. But as such pseudo categories were not adjusted to the conditions of reality, behavior directed by a quasi reasoning based upon them was bound to fail and to spell disaster to those committed to it. Only those groups could survive whose members acted in accordance with the right categories, i.e., with those that were in conformity with reality and therefore to use the concept of pragmatism worked. The Darwinian concept of natural selection tries to explain phylogenetic change without recourse to finality as a natural phenomenon.
Experience is a mental act on the part of thinking and acting men.
It is impossible to assign to it any role in a purely natural chain of causation the characteristic mark of which is the absence of intentional behavior. It is logically impossible to compromise between design and the absence of design. Those primates who had the serviceable categories survived, not because, having had the experience that their categories were serviceable, they decided to cling to them. They survived because they did not resort to other categories that would have resulted in their own extirpation. In the same way in which the evolutionary process eliminated all other groups whose individuals, because of specific properties of their bodies, were not fit for life under the special conditions of their environment, it eliminated also those groups whose minds developed in a way that made their use for the guidance of conduct pernicious.