OTOH, he may have been quite aware that "read more Asimov, and be more smug about being right more often" was a major motive for people buying his non-fiction writing.
From Wikipedia:
> "Asimov was an able public speaker and was regularly hired to give talks about science. He was a frequent participant at science fiction conventions, where he was friendly and approachable. He patiently answered tens of thousands of questions and other mail with postcards and was pleased to give autographs."
I think that, in driving home a valid point, this essay gives the wrong impression of Asimov as someone who would scold his readers.
http://www.asimovonline.com/oldsite/future_of_humanity.html
is a transcript of a 1974 talk/lecture that shows how fun and modest he was, while still delivering a lot of interesting points to ponder.
Useful discussion is an interesting scope for someone with the broad, in-depth knowledge of a vast array of subjects he demonstrates in the linked essay.