Over the past two centuries, the metaphor has been greatly extended to explain some of the more subtle points of population genetics. Sometimes you see something very, very nice. That was one of those. It was surprising to see something so simple. It's the pinnacle of a designer.
Lawyers try to make simple things complicated.
We try to do the opposite. He confides that the initial paper didn't take excessive amounts of time or energy, unlike most projects he tackles. It brought, however, one of the most satisfying discoveries of his career. So I tried to look at it another way. It's like finding a nugget of gold in iron ore.