I've definitely experienced strong adverse reactions to discussing eugenics 'cavalierly' if you don't spend at least ten to fifteen minutes covering the inferential steps and sanitising the perceived later uses of the concept.

Good point about the possible three communities. I haven't posted here much, as I found myself standing too far outside the concepts whilst I worked my way through the sequences. Regardless of that, the more I read the more I feel I have to learn, especially about patterned thinking and reframes. To a certain extent I see this community as a more scientifically minded Maybe Logic group, when thinking about priors and updating information.

A lot of the transhumanist material have garnered very strong responses from friends though, but I've stocked up on Istvan paperbacks to hopefully disseminate soon.