[davidw]

Asking someone to spend an hour on something is not a big deal, but I've seen/heard of stuff where they're talking about half a day or even an entire day. For someone with other things going on like a family (I know it may seem outlandish to younger readers here, but it does happen) and a current job, that's asking an awful lot. It does not take the company an entire day to review that exercise, making the time commitment very asymmetric.