"First person: He started with one, and adding one to itself, got two. Second person: Yeah, that sounds pretty simple. First person: Ah, but then he had one next to one next to two, so he said to himself, "I'll take the last two numbers in the list, add one next to the two"— Second person: The one next to the two. First person: —and that'll give him three. Second person: Oh. First person: And then the three next to the two would give him five— Second person: Five, yeah. First person: —the five next to the three would give him eight— Second person: Eight. First person: —and he kept playing with the numbers. Thirteen, twenty-one, thirty-four, fifty-five, eighty-nine— Second person: [laughs] Sounds like a waste of time. First person: Well, that's what I thought, y'know, that he didn't have anything better to do. But it turns out that the curiosity that had him playing with this kind of "adding up of numbers"—what's now remembered as the Fibonacci numbers—turns out to have a curious and very surprising relationship to botany and classical art. Second person: How so? First person: I don't lie, but there seems to be examples of Fibonacci numbers all over the place in nature."