Solid intro into the lambda calculus. Wasn't so into the js examples, but after reading the other comments, I can totally see how a functional/mathematical synt

Solid intro into the lambda calculus. Wasn't so into the js examples, but after reading the other comments, I can totally see how a functional/mathematical syntax would have been very disorienting for someone not familiar with the lambda calc. Since those people are obviously the target audience, js seems fitting.