I once scribbled down some Scheme on a napkin during a conversion with my sister, a non-programmer. (God knows how it came up, but anyway, it did.) She looked a

I once scribbled down some Scheme on a napkin during a conversion with my sister, a non-programmer. (God knows how it came up, but anyway, it did.) She looked at it, and said two things: 1. So many parentheses! 2. You made a mistake right here.