Episode 10.39: Passion in science; the persistence of the visionary; waste-paper-basket theory.

We look at questions to do with the personal convictions and passions that drive scientific discovery, and in particular the visionaries who leads scientific progress. We contrast the ways of understanding the universe that are now standard for many physicists with the scepticism of such as Roger Penrose who think that things in physics are nowhere near as settled as some would have us believe. We reiterate the waste-paper-basket principle.