The Rule of Limits

I love this video, first because of the kid's uncanny resemblance to Young Forrest Gump. Second, because of the reaction of the other kids  – they're stunned, thrilled, and ignited by his performance. (If he can do it, why can't I?)

But the main reason is that it holds a useful strategic lesson. This kid has memorized a massively impressive number by breaking it down in three- and four-number chunks — and then linked those into larger chunks (check out the pauses as he moves from one string...