"My point is that there's it's very difficult to measure the productivity and "results" of knowledge work, and you need to look at all the data. This includes l

"My point is that there's it's very difficult to measure the productivity and "results" of knowledge work, and you need to look at all the data. This includes looking at hours worked..." I agree with jimbokun: measuring "time spent" can be useful in many cases, but it does not measure productivity or quality of work. I understand how difficult it is to measure productivity, but the answer is not to use a poor metric just because it's handy.