Under what conditions would you cheat?

What situation or condition would cause you to cheat? Would it depend on who was being cheated? If you were vying for a promotion but you somehow came into possession of the criteria the higher ups were seeking in the candidate to fill the upcoming position, would you take it home and study it, or shred it? If it were against a coworker you could not stand in the least, would that make a difference? If you were purchasing something and the salesman left a box unchecked that had a favorable clause for you, he had already signed it on the bottom, would you check ”yes” in the box before you got to the desk of the person double checking and signing off on the deal? You have your final test coming up, you need a great grade to pass the course, you discover your study partner has gotten bootleg copies of the three possible tests the professor could use, do you refuse to use them or study with that person even if it were a friend?