I think the point he was trying to make is this: would you consider someone who could completely crush you at, say, basketball, to have "abnormal powers"?
I'm not talking pros, I'm talking about people who've played sports all their lives. They can probably beat most people at their chosen sports. And a lot of perfectly "normal/average" people are really good at one sport or another. We don't talk about them as if they're "abnormal".
Haven't done it, but I'm guessing that memorizing 1500 digits of pi is easier and less time consuming than getting to a decent level at some sport. Except that for most people, playing sport is fun, so they don't think about it as "extreme concentration". For the op, memorizing digits of pi was fun (I'm guessing?).
I'm not talking pros, I'm talking about people who've played sports all their lives. They can probably beat most people at their chosen sports. And a lot of perfectly "normal/average" people are really good at one sport or another. We don't talk about them as if they're "abnormal".
Haven't done it, but I'm guessing that memorizing 1500 digits of pi is easier and less time consuming than getting to a decent level at some sport. Except that for most people, playing sport is fun, so they don't think about it as "extreme concentration". For the op, memorizing digits of pi was fun (I'm guessing?).