Yeah, it all depends on what you're trying to do. I'd also wager that Graham et al simply had more fun writing Lisp than any other language, and I grant them th

Yeah, it all depends on what you're trying to do. I'd also wager that Graham et al simply had more fun writing Lisp than any other language, and I grant them the right to do whatever they like. Yahoo presumably bought the product because they found it valuable. If they found that rewriting Lisp in C++ was the only way to get people to work on it, I don't question their business decision, although it does seem like a kind of "now you have two problems" situation. (Personally I find C++ way more difficult than anything I've seen in Lisp.)