In 2000, a stranger on the internet described a hidden function inside a 1975 IBM 5100 computer that almost nobody outside a handful of retired engineers knew existed. He said he was a soldier from 2036 sent back to retrieve it. He made 151 posts over 4 months. Never asked for money. Never broke character. Then he typed one final sentence and vanished forever. 25 years later, nobody can prove who he was. Full deep dive on the channel now. #JohnTitor #TimeTraveler #IBM5100 #InternetMystery #UnsolvedMystery #TimeTravel #ArtBell #SteinsGate #Shorts 👉 Connect with us: Subscribe: https://www.youtube.com/@AmericasStrangestHistory Website: http://www.americasstrangesthistory.com/ Email us: ash@americasstrangesthistory.com © America’s Strangest History