[quickthrower2]

Option 1 - Don't measure and hope

Option 2 - Measure

Option 3 - Use judgement

We undervalue qualitative measurements when talking about this stuff. But in real life it is all there is. If you did everything with a measuring tape, you could do nothing (not even walk to your car!). If you care about nothing and close your eyes, things will get disorganized and chaotic and out of control.

This doesn't mean measure nothing, but don't try to get some perfect measure of productivity. At least not in creative work like software development.