> At least, not until AI gets much, much better than it is today. One could extend LDA (a common topic model) to include people, by modeling topics as mixture

> At least, not until AI gets much, much better than it is today. One could extend LDA (a common topic model) to include people, by modeling topics as mixtures of people (which they kinda are), and any given comment is generated by a mixture of topics. If anyone is missing, pull them in; if it's the wrong topic channel, move the thread over etc. I'm not saying it'd be compelling but it's possible