I usually have a fantasy where i travel back in time to middle ages/ancient times and try to: * convince people i am not a devil worshipper/magician/time trave

I usually have a fantasy where i travel back in time to middle ages/ancient times and try to: * convince people i am not a devil worshipper/magician/time traveler * explain how some concept works. Imagine trying to explain electricity to Pope from 1000 AD, or mathematical functions, and integration/derivative to Greek philosophers etc.