The standard to compare your software to is what it could be, not what your current competitors happen to have.

Technology = Leverage Startups offer anyone a way to be in a situation with measurement and leverage. They allow measurement because they’re small, and they offer leverage because they make money by inventing new technology.

If you understand McCarthy's eval, you understand more than just a stage in the history of languages. These ideas are still the semantic core of Lisp today. So studying McCarthy's original paper shows us, in a sense, what Lisp really is. It's not something that McCarthy designed so much as something he discovered. It's not intrinsically a language for AI or for rapid prototyping, or any other task at that level. It's what you get (or one thing you get) when you try to axiomatize computation.