@bontchev As someone who worked on slot machines I actually get a bit offended by this one because we were required to make sure our machines created results within a specific "truth value" (return to player) and if they actually failed in the field there was a lot of hell to pay.

It was a massive mess because the tests take forever to run and if there's a bug in the math it's not like I can fix it. Usually it was a mundane error in the code though. Or failure to directly copy the spreadsheet