Software engineers aren't making widgets, and its hard to measure output quantitatively. I can assure you that your ability to make good decisions isn't as good

Software engineers aren't making widgets, and its hard to measure output quantitatively. I can assure you that your ability to make good decisions isn't as good after 18 hours of working as it is during the first 6. In engineering, good decision making can save you tons of time in the long run.