> the sheer gain in productivity due to brevity, type checking, cleaner closures, and various other language features, easily outweighs any costs. Serious ques

> the sheer gain in productivity due to brevity, type checking, cleaner closures, and various other language features, easily outweighs any costs. Serious question: do you have a metric you are using to measure that, or is it just kind of a "gut feeling?"