On November 2nd, 2000, somebody logged onto a small internet forum and described, in technical detail, a machine that could move a human being through time. They said they were a soldier from the year 2036. Their mission: retrieve a 1975 IBM 5100 computer with a hidden function that almost nobody outside a handful of retired engineers knew existed. Over 4 months, the user made 151 posts under the name John Titor. He described the time machine down to serial components. Posted photographs and what appeared to be pages from an operations manual. Cited real theoretical physics.. He answered hundreds of questions with a patience and consistency that pointed away from a hoax. Then on March 24th, 2001, he typed one final sentence and disappeared. Nobody using that name ever posted again. 4 years later, a journalist tracked down one of the original IBM 5100 engineers. Bob Dubke confirmed the hidden function was real! It was his personal contribution to the machine and IBM suppressed it. And....so much more... SOURCES: Time Travel Institute forum archives, Art Bell / Coast to Coast AM archives, IBM 5100 engineering records (Bob Dubke confirmation), John Titor Foundation LLC filings (Florida), Voyager (Italian television, 2008) / PI Mike Lynch investigation, John Hughston / Hoax Hunter linguistic analysis (WCopyFind), Joseph Matheny interviews (Project Archivist podcast, 2015), IEEE Spectrum, Marlin Pohlman USPTO patent filing, Reddit IBM 5100 ROM forensic analysis (2026), Frank Tipler (Tulane University, 1974 paper on rotating cylinders). #JohnTitor #TimeTraveler #IBM5100 #InternetMystery #TrueCrime #UnsolvedMystery #TimeTravel #ArtBell #CoastToCoast #SteinsGate #AmericasStrangestHistory #InternetHistory #Hoax #ConspiracyTheory 👉 Connect with us: Subscribe: https://www.youtube.com/@AmericasStrangestHistory Website: http://www.americasstrangesthistory.com/ Email us: ash@americasstrangesthistory.com © America’s Strangest History