Exponential complexity Memes

The Tower of Hanoi: that innocent-looking wooden toy with colorful disks that normal people dismiss as "just a kids' game." Meanwhile, programmers are having existential crises implementing its recursive algorithm. Nothing says "fun childhood memories" like a problem that requires 2^n-1 moves and teaches you the crushing reality of exponential time complexity. Your CS professor probably still wakes up in cold sweats thinking about it.