That's a good question. I think two things: 1. High quality video recording and transmission is still relatively new technology, and it seems most lectures are

That's a good question. I think two things: 1. High quality video recording and transmission is still relatively new technology, and it seems most lectures are audio visual performances. 2. There hasn't been a push for a paradigm shift. Lectures work well enough, and have lots of benefits like creating a gathering of people. But does COVID change that?