So there's some probability that I pick a fair coin. And there's some probability that I pick an unfair coin. And so what is the probability that I pick a fair coin? Well, 1, 2, 3, 4, 5 out of the total 8 coins are fair. So there is a 5 8's probability. I'll write it here on the branch, actually. So there's a 5 8's chance that I pick a fair coin.