The Monty Hall Problem

You're on a game show. A mega-yacht is behind one of three doors, lumps of seaweed behind each of the other two. You guess Door A. The host doesn't tell you whether you've won; instead, he opens one of the other doors (say, Door B) to reveal a lump of seaweed – and invites you to stick with Door A, if you're comfortable with that choice, or to switch to the remaining unopened door. Your call.

Should you switch?

See for yourself.

[via velcher of chucks_angels]