You may recall that last year around this time Yahoo, Warren Buffett and Quicken Loans teamed up to offer this challenge: If anyone could pick the winner of every single game in the NCAA’s 64-team, six-round March Madness basketball tournament, he or she would win a billion dollars.

No one met the challenge, or came close. In fact, the tournament wasn’t even half over before the final perfect bracket sheet was no longer perfect. This came as no surprise to anyone, in large part because the odds against completing the challenge successfully were one in 9 quintillion or one in 128 billion, depending on who’s doing the math, according to this explanation in Slate.

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