I agree, and I'd like to clarify that when we are talking about training it's not about learning how to program. It's about being OK with hiring a developer who is expert in C++, LISP and Haskell, and being able to say, hey, it's OK he doesn't know PHP because it will only take him a weekend to pick it up. The training of talented developers is self training, but sometimes they do appreciate the company providing or covering the costs of the books they'll need.