Computer designers sometimes hide tiny silkscreen Easter eggs on circuit boards, adding subtle jokes, messages, or references that most people will never notice. In 2018, SpaceX revealed a charming little detail when it launched a Tesla Roadster into space. Hidden on the car’s internal circuit boards was a small silkscreened Easter egg reading, “Made on Earth by humans.” Designers sometimes hide messages like this inside complex hardware as a subtle signature of their work. Invisible to almost everyone, these tiny discoveries offer a fun reminder that even the most advanced technology is ultimately created by real people with a sense of humor and creativity.(Historic Vids)