Shiftheads - The Alien Theory That Says They're Just Future Humans

What if the classic grey alien everyone describes is not an alien at all, but a human from thousands of years in the future? This conversation walks through a theory that reframes decades of UFO sightings, then digs into one of the strangest real cases behind it: a man who faxed a radio show in 1998 claiming to be a time traveler from 2036, warning about Y2K and a civil war that never came. From there the discussion gets into why the paradoxes of time travel make it nearly impossible, from killing your own grandfather to a time machine that loops back on itself with no actual inventor. It closes on the Mandela effect, the multiverse theory some people use to explain it, and the specific tricks social media accounts use to fake successful predictions. Listeners get a clear-eyed walk through why this stuff is so easy to believe and so hard to prove. Topics: time travel theory, UFO aliens, John Titor, grandfather paradox, Mandela effect GUEST: Nathan Radke | https://www.amazon.ca/Uncover-Up-Think-Clearly-Conspiracies/dp/1770418873/ | @‌theuncoverup Originally aired on 2026-07-15