The only anecdotal evidence is in the first para. The second para is an obvious evolutionary argument, which I came up with myself rather than my hearing it fro

The only anecdotal evidence is in the first para. The second para is an obvious evolutionary argument, which I came up with myself rather than my hearing it from somewhere else (but it follows the same simple pattern as many evolutionary arguments I have heard). The rest is my recollection of what I learned listening to Longo's being interviewed and maybe also what I learned from a few quick uses of a search engine. I decline your suggestion for me to look stuff up so that I can post the results here. I might have made the effort if my previous 2 comments had been upvoted significantly (which is the main way for me to tell whether readers value them) but both are sitting at a score of 1.