One Hour in a Silent, Dark Anechoic Chamber

HN links it in threads about silence and quiet rooms, as a good first-hand look at the anechoic chamber that debunks the madness myth.

Veritasium's Derek Muller spends an hour in a silent, dark anechoic chamber at BYU to test the claim that 45 minutes is the most anyone can bear. He reports on his experience and other people's reactions.