"The guy"? There were two guys, Luis Alvarez and his son Walter Alvarez, a geologist. It wasn't just a case of a famous physicist meddling in a field he knew no

"The guy"? There were two guys, Luis Alvarez and his son Walter Alvarez, a geologist. It wasn't just a case of a famous physicist meddling in a field he knew nothing about. Edit to add: checking Wikipedia, I see that chemists Frank Asaro and Helen Michel are also credited as part of the core team, although it still gets called the "Alvarez hypothesis".