I have had guys tell me they have ran 4:08 and even 4:02 in the mile based on some quazi workout the coach had them run. Okay. Seriously, I never heard of you. This is fairly common. I also hear what people estimate they could have run over a certain distance. It is a bit harder when your actually doing it. I was a hack at ultras, but I actually knew I had to post a time at Nationals to be considered. Get this, you have to actually have a time run over a certified course, with marshalls, and a USATF membership. I wasn't fast, but I couldn't just talk about what was possible. Everthing appears possible with the number 2 pencil and paper.
At first, this Bolt character surprised me, but when he said it was about obtaining the gold medal and not time I embraced this. He's out to beat people. I like that.