Thorne–Hawking–Preskill bet

The Thorne–Hawking–Preskill bet was a famous wager made in 1997 between three prominent physicists: Kip Thorne, Stephen Hawking, and John Preskill. The bet revolved around the nature of black holes and the information paradox, which questions whether information that falls into a black hole is lost forever or can be recovered. In essence, the bet was about whether information that falls into a black hole is truly irretrievable.