Depth and detail are also why we prefer proposals for solo presentations (as opposed to panels). Yes, there will continue to be panels at SXSW in the future — but, single-person talks are definitely the preferred format for creatives who gather in Austin each March.
… nature of time. What could have been before the Big Bang, if that was the beginning of everything. How can the universe either be finite or infinite? There’s no reason to think that every aspect of reality will be intuitive.