[klyrs]

> That's not really a Javascript problem. That's a dynamically typed language problem.

I disagree; I do a lot of work in both dynamic and strongly typed languages. Most often, when I find a bug "not where the error occurs," it's because, for example, I'm accidentally computing a minimum and later assuming it to be a maximum. Unit tests catch most of this, so such debugging puzzles usually happen to me in fresh new code with unstable interfaces...