What is “healthy,” of course, is ever more challenging to decipher, in no way helped by the presence of market forces in almost every decision. Attempting to understand humans as an evolutionary phenomenon, as we are doing in this book, assumes that all of our minds are, behind the scenes, doing a cost-benefit analysis between choices that we perceive that we have. From how to walk, to whom to mate with, to what book to read, it’s all cost-benefit analysis with the target of increasing fitness. Our software is built to maximize our fitness, even if our conscious minds have other priorities.
