I loved the speaker's premise, so the Cambridge Forum part of the evening was great. The Meetup organizer had bowed out beforehand, suggesting that we "find each other" (as I recall, perhaps incorrectly). A thoughtful Meetup member posted a logical meetingplace and some suggestions for gathering afterwards, but this somehow didn't happen, though 3 of us did get together. I'm reminded of post-movie and other post-lecture gatherings where the organizer carried a "Meetup" sign, we saw it, and all was well. The presence of a sign, no matter how hastily constructed, would have saved the second half of the evening. But, also, I'm guessing that Meetup members didn't read the last-minute posting by the organizer and the thoughtful member.
— Barbara