An Interdisciplinary Analysis of Decision Variability and the Illusion of Free Will

We demonstrate how Darwinian evolution enhances decision-making via experiential learning and game-theoretical strategies. To an external observer, the resultant moderate intra-individual variability is indistinguishable from free will. We conclude that this evolutionary outcome is the simplest explanation for decision-making, thus being preferable according to Occam's razor, and implying that free will is an illusion. Furthermore, we argue that the perception of free will exists due to evolutionary benefits.