Link: I can’t stress how awesome XKCD’s new What If section is

Ask XKCD’s Randall Munroe “What would happen if…” and he’ll give you a detailed answer, complete with illustrations. Just started, only two are answered, but definitely worth checking out every few days.

This means that the odds of acing the SAT by guessing are worse than the odds of every living ex-President and every member of the main cast of Firefly all being independently struck by lightning … on the same day.