This reminds me of more than one job interview I've had. One included a puzzler that was "fix this horribly convoluted javascript code by adding exactly four ch

This reminds me of more than one job interview I've had. One included a puzzler that was "fix this horribly convoluted javascript code by adding exactly four characters." I'd consider myself a pretty good bug finder-and-fixer. As in, I've read multiple books on debugging methods and even given some talks on effective debugging. Nevertheless, these kinds of stumpers make me freeze up. I dunno exactly what puzzles like these demonstrate. That you spend a lot of time working in poorly written code?