A Question From a Physicist About a Zero Banana Universe

We're always getting questions from listeners who are thinking themselves about crazy stuff in the universe. So here's a really fun question we got from roselle santos, hidingan and horhe. Why would serious physicists hypothesise about disembodied brains floating around in the universe? It sounds both shocking and absurd to me that i'm excited to know more about it. And this sounds like a ridiculous and absurd idea, but it's actually a very useful and powerful tool in cosmology.