e-Day

We celebrated e-Day (Feb 7) by simulating Bernoulli's famous envelope problem with a form of solitaire. The envelope problem goes "something" like the following. Picture a stack of letters and addressed envelopes sitting on a desk. Someone opens the window and a huge gust of wind scatters the letters and envelopes all over the room. In your haste to get to the post office, you randomly stuff letters into the envelopes and dash out the door. The question of course for pessimists is, what are the chances that no letter ended up in the correct envelope. The answer is related to e (of base of natural logarithms fame).