Apocalyptic sects believe that there are certain events that will signal the coming of the end time, the final judgement and the call home of virtuous souls. Generally accepted wisdom in Judeo-Christian circles is that there will be seven of these types of signs.
Any baseball fan knows that the seventh sign of the coming apocalypse is a Cubs vs. Red Sox world series. Given that we had half a sign last year when that team from Boston won the world series, I shouldn’t be surprised that we’ve had another: three female contestants on Jeopardy at the same time. It sort of makes me wish that Steven Levitt had written about sex discrimination on Jeopardy instead of race discrimination on The Weakest Link