1801 - Joseph Marie Jacquard uses punch cards to instruct a loom to weave "hello, world" into a tapestry. Redditers of the time are not imp...
An absolute classic. One of my favourite parts:
1987 - Larry Wall falls asleep and hits Larry Wall's forehead on the keyboard. Upon waking Larry Wall decides that the string of characters on Larry Wall's monitor isn't random but an example program in a programming language that God wants His prophet, Larry Wall, to design. Perl is born.
Extra fun fact for comment reading friends: This post is the origin of the meme "Monads are just monoids in the category of endofunctors. What's the problem?" Source