Why Can't You Tickle Yourself?

A researcher leaned over a baby orangutan with a microphone and tickled it — and the sound that came back was recognizable instantly. Somewhere in your own skull is a ten-million-year-old circuit that decides exactly who gets to make that sound, and it has already stopped you from tickling yourself without you ever noticing. In this video you'll see why laughter sorts perfectly onto the ape family tree, why two 1897 psychologists split tickling into two completely different signals, why your most ticklish spots are also your most vulnerable ones in a fight, and why a London lab could make your own hand feel like a stranger's just by delaying it a third of a second. You'll also learn what Robert Provine found when he eavesdropped on a thousand real laughs in public — and why almost none of them followed a joke. If your brain just quietly ran this circuit while you read that, hit like, drop a comment with the loudest laugh you can't explain, and subscribe for more of what's actually running under your instincts. #AncientHumans #Evolution #Neuroscience #HumanBody #Psychology