The Final Jeopardy! questions seem to be, by design, things you can't know. And so it's not about who knows them, but who can figure them out in thirty seconds.
I think that black Africa is extremely terrifying. Black Africa can become a maelstrom of warring tribes without the outside world needing to feel the need to do anything about it.
Interesting phenomena occur when two or more rhythmic patterns are combined, and these phenomena illustrate very aptly the enrichment of information that occurs when one description is combined with another.