Imagine that there is a new scientific theory that warns of an impending crisis, and points to a way out.
This theory quickly draws support from leading scientists, politicians, and celebrities around the world. Research is funded by distinguished philanthropies, and carried out at prestigious universities. The crisis is reported frequently in the media. The science is taught in college and high school classrooms.
I don’t mean global warming. I’m talking about another theory, which rose to prominence a century ago.