L-R: Cam (Tamara Taylor), Brennan (Emily Deschanel), Booth (David Boreanaz) and FBI Special Agent James Aubrey (John Boyd) watch while Hodgins chases after a goat at a crime scene in the "The Lost Love in the Foreign Land"
The impossible becomes reality all the time. Ideas, and memories, and love. You can't hold those things in your hands, but it doesn't mean that they don't exist. So, why not spirits? And why not Sweets? You don't have to believe. I get it. But you don't have to dismiss the possibility, either. No decent scientist would do that.