[sp332]

It reminds me of a prank a relative of mine used to play on other people using punch-card computers. The computer had no math unit (!) so addition tables and multiplication tables were fed in on punch cards. Easy enough to change one of those and make perfect code give very odd answers.

[vxNsr]

Boy, he must've been hated, I personally am too young to remember the punch-card days of programming but my dad spent most of his younger days doing it that way and he said that one of the reasons his code has fewer bugs/mistakes than mine (aside from 30+ years exp on me) is because no one wanted to make a stupid mistake somewhere in their stack [of cards] that would mean going to that back of the line just because they used a plus instead of a minus or something (I don't remember the exact example).