Even with the discussion section, there are ideas or questions too short or inchoate to be worth a post.
This thread is for the discussion of Less Wrong topics that have not appeared in recent posts. If a discussion gets unwieldy, celebrate by turning it into a top-level post.
It would be especially nice if we could build a collection of canonical explanations of recurring points, sort of like the sequences. People have been talking about a LW for existential risks for a long time; I think that topic fits naturally with transhumanism, the singularity, and predicting the future in general.