>>You mention diff(1), but who's to say the author(s) of that tool would've necessarily solved this problem on the spot? I think this is the gist of the all pr

>>You mention diff(1), but who's to say the author(s) of that tool would've necessarily solved this problem on the spot? I think this is the gist of the all problems facing the current interview process. There is a big difference between inventing a solution to a problem, and learning the solution to a problem which some one invented. The latter shows nothing about the ability or even the way in which a person thinks or even works. It just shows the person was able to scale multiplication table memorization skills to other things as they grew up.