The biggest danger in evolutionary thinking is "just-so" rationalization of the present state of things where we take the way things are and assume they are the

The biggest danger in evolutionary thinking is "just-so" rationalization of the present state of things where we take the way things are and assume they are the way they are because they were evolutionarily efficient, and then construct a story that explains why some particular trait is particularly adaptive. Once you dive into the weirdness of biology and the madness of evo-devo, one of the first things that strikes you is how weird biology is and how many strange compromises bodies make as a consequence of selective pressures, and how many "spandrels" or side-effects there are. Boredom might be a spandrel, a decorative side-effect, of intelligence, which is probably the chief evolutionary advantage of human beings. Anyway, the wrong thing to do is to take some trait and reason back based on the assumption that it was evolutionarily adaptive. That's basically evidence-free speculation. Or fiction.