Adding a few more: * Not giving up when your errors do lead to physical damage. Repair the heat exchange radiators that froze because you didn't test what happ

Adding a few more: * Not giving up when your errors do lead to physical damage. Repair the heat exchange radiators that froze because you didn't test what happens when outside temperatures drop. Change the timing belts that snapped because of off-by-one mistake when estimating position of part on conveyor. Straighten the door bent by air pressure when your pressure/temperature regulator oscillates because it was tuned without taking sudden disturbances (opening the said door) into account. * Staying motivated during the long product development cycles. Just when you think you're finished when manufacturing starts- there is still a lot of grunt work to do. * Designing a logging system that stores enough information to pinpoint issues yet be lightweight enough.