for what it's worth, i only invite double-length track keynotes when I'm very sure that both speaker and content deserve it. Today, @chrmanning and @abshkbh did double duty at AIE and by all accounts* people loved the opportunity to go deeper on sandboxing and world models. Look at this insane room - and the online audience is going to be >1000x this!!
*i unfortunately have to do show duties so rely on secondhand accounts
i havent watched all the online talks yet but am binging this one now and it is exceptional. we are very lucky to have all this sandboxing teaching for free. me...