Thoughtful and correct IMO. Caching is much more important to get right than backend-speed. Number crunching capability does not matter that much for web applic

Thoughtful and correct IMO. Caching is much more important to get right than backend-speed. Number crunching capability does not matter that much for web applications. And you can always outsource the tough calculations to languages better suited for it: ML, Common Lisp, C++, C, etc.