I argue that our general disposition to make moral judgments and our core moral intuitions are likely the product of social selection—a kind of gene–culture coevolution driven by the enforcement of collectively agreed-upon rules. Social selection could potentially track mind-independent moral truth by a process that I term realist social selection: our ancestors could have acquired moral knowledge via reason and enforced rules based on that knowledge, thereby creating selection pressures that drove the evolution of our moral psychology. Given anthropological (...) evidence that early humans designed rules with the conscious aim of preserving individual autonomy and advancing their collective interests, the theory of realist social selection appears to be attractive for moral realists. The goal of evolutionary debunking arguments should be to show not that our moral beliefs are the product of natural selection, but that realist social selection did not occur. (shrink)

This article is a libertarian critique of incest laws. On the basis of the libertarian “harm principle”, one must ask what exactly is the harm that incest brings forth. Traditionally, anthropologists have tried to rationalize the incest taboo in various theories, and lawmakers have used these principles as grounds for the criminalization of incest. These principles are the preservation of family structure, the enhancement of alliances and the avoidance of genetic risks. While I acknowledge that these rationalizations are plausible, I (...) argue that they are still not sufficient grounds for the preservation of incest laws, and consequently, there is an ethical need to reform them. (shrink)