But he guessed the winner anyway. So, you get one of the letters, perhaps, that says Evander Holyfield's going to win, and he wins. And the other 128 must be discarded. He then takes the 128 and divides that in half, so he sends 64 letters about the next event, and 64 letters contrary, with contrary results, and he throws away half of them again. And it just so happens that every time, you're on the winner's side.
Somebody has to be.
In fact, half the people have to be. Until he gets down to one person. He gets down to you. He's been right every time. Except you got a 50-50 chance, which is exactly what you had without the letter.