I mean, rewards are part of it. It helps when your society is covered in frescoes and statues that glorify the engineer and the bricklayer... But when the was

I mean, rewards are part of it. It helps when your society is covered in frescoes and statues that glorify the engineer and the bricklayer... But when the wastrel of a director is driving a BMW, and you have a ten-year waiting list for a broken-down Lada, you may still feel some resentment against said director. The 'Rewards' side of things is pretty decent in some parts of STEM, but are rather lousy in others. Hardware work does poorly on this scale.