One of the advantages of local conferences with local speakers is adding good speakers and talks as resources in our movement. (Others include decreasing boredom and avoiding holding a small group of speakers up as heroes.) This talk by Chris Calvey was much talked about all weekend at Freethought Festival.
I was still in transit when he spoke, but I can see why people were talking about this. Chris will get more polished as he talks more, of course, but this is a good, thought-provoking talk on a difficult subject. If Freethought Festival had stuck to only already-known speakers, we would have missed it, and that would have been a shame.