That only means instantaneous productivity isn't useful. Fortunately most employers know this: The employer pays for a mean-productivity-over-time. If your pro

That only means instantaneous productivity isn't useful. Fortunately most employers know this: The employer pays for a mean-productivity-over-time. If your productivity falls below that value you will get fired, and if it exceeds some other bound you may be bonus'd or promoted. However if the productivity exceeds this line by 40x, then the question remains: Do you pay your programmers 40x?