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.
Coincidence or name-drop?
(A fine suggestion, in any case, though "List of cognitive biases" would also be a good one to have on the list.)