Of course, there are many scientists who continue to see great promise in string theory and the multiverse. But, as Marcelo and I wrote in The New York Times last year, it all adds up to muddied waters and something some researchers see as a "crisis in physics."The "crisis" here is that we have good physical theories that explain nearly everything that is observed. Theoretical physicists like to speculate about unobservable parallel universes, but then they have no data to test their ideas.
Smolin and Unger believe this crisis is real — and it's acute. They pull no punches in their sense that the lack of empirical data has led the field astray.
Saturday, July 2, 2016
The crisis in Physics
NPR Radio reports: