It's referring to the many bad but appealing analogies to human thinking, though mentioning that book was more of a landmine for Proko, as I'm talking about how we analogize rather than trying to say something is wrong with what the author says. System 1, religious superstition, and irrational human fears (and probably more things) are often explained that way. That we developed a self-preservation instinct because "if you went to investigate the sound in the bush, you would have been eaten." But that's just not how it went down at all.
We arrived as homo sapiens with basically all of the rational and irrational self-preservation instincts already in us from millions of years as evolving as primates. There never was a special, pure, naive species of man that had to begin learning about the natural world, being heavily pressured by the results of his curiosity. We developed superstitions and other behaviors that could be explained that way, but that's not how it happened.