I don't mean to nitpick, Tom, but is this really your plan?

Textbooks in evolutionary psychology have proposed the hypothesis that the fear of spiders is an adaptation shaped by the mortal threat posed by their bites. In other words, we are descended from hominid wusses who thrived because they kept away from spiders. The idea is prompted by evidence that people may be innately primed to notice and be wary of spiders (as we seem to be of snakes). Yet there is no reason to think that spiders in the Stone Age were a greater threat to man than they are now—which is to say, hardly any threat at all. Scientists who study phobias and dislikes have come up with several features of spiders that may be more relevant than their bites, including their unpredictable, darting movements. Natural selection would have played some role in the development of any such general aversions, which may have their origins in distant species, somewhere far back down the line that leads to us. But that’s another story, one that evolutionary psychologists have less interest in telling, because they like tales about early man. It would be good to know why some people love spiders—there is, inevitably, a Facebook group—while others have a paralyzing phobia, and most of us fall somewhere in between. But, with one large exception, evolutionary psychology has little to say about the differences among people; it’s concerned mainly with human universals, not human variations.