[codeonfire]

Productivity depends way more on the programmer and his/her knowledge of the common idioms, language features, and libraries for any particular platform than any specific language. The characteristics of languages that make it fast to implement features include dynamic typing, built-in collections, a large class library, availability of an interactive console, availability of a debugger that can easily be used on any host machine, JIT compiled or interpreted, no binaries or packages to build.