Probably The Most Sweat-Inducing User Input Verification Code In History

When your user input validation involves checking if an astronaut is lying about cranking the antenna, you know you've gone beyond typical form validation. This is actual code from the Apollo Guidance Computer that controlled the lunar module landing.

The comments are pure gold: "PLEASE CRANK THE SILLY THING AROUND", "SEE IF HE'S LYING", and my personal favorite, "OFF TO SEE THE WIZARD..." These programmers were literally writing life-or-death code in assembly while maintaining the energy of someone debugging a WordPress plugin at 2 PM on a Friday.

The stakes? If the astronaut says the antenna is in position 1 but it's not, the landing radar might not work. No pressure. Just a quarter-million-mile commute with no AAA coverage. Makes your production deployment anxiety look pretty tame, doesn't it?

Fun fact: This code was woven into rope memory by hand. Literally. Each bit was a wire threaded through or around a magnetic core. One typo meant rewiring the entire thing. And you complain about merge conflicts.