The other thing that's interesting is that he didn't have specific examples.

I'm not sure how much of that is discarding the specifics once one has a satisfying generalization, a motivation which makes some sense if one is satisfied by good generalizations.

Another possibility (from poking around in my head for my issues) is feeling as though being more specific increases the risk of being attacked, and (from the same source) being unsure of one's more sensory memories. (That last went in and out of memory as I was writing.)

And, of course, there's always the chance of something going on that I haven't thought of.