So my question is, what happens is I put my hand in the bag and my eyes are closed. And I picked out a coin. And then I flip it six times. And it turns out that I got 5 out of, well, let's say, yeah. Well, let's say I got 4 out of 6 heads. That's the result I got. What I want to know is, what is the probability that I picked out a fair coin given that I got 4 out of 6 heads?