The Herb Garden Germination - S4-E20
Question: In the beginning, Sheldon and Amy are attending a reading (or lecture) of Brian Greene. It seems Sheldon is truly mocking, although at the end he says he's kidding. Do theoretical physicists consider Greene to be a hack, or is he respected in the field of physics? Are Sheldon and Amy truly laughing at him?
Chosen answer: He's respected. Sheldon just thinks he knows more than anyone else and mocks anyone whose theories don't agree with his completely. Amy is probably just going along because it makes Sheldon happy.
Captain Defenestrator