String theory has dominated discussions at the frontiers of physics for decades, especially in the attempts to build a quantum theory of gravity. But does it deserve its exalted status? Nobel Prize winner and String Theory pioneer David Gross debates Carlo Rovelli, one of the founding fathers of Loop Quantum Gravity. The discussion is lively; full of insights, insults, backhanded compliments and even some common ground as to the nature of physics.

Timecodes
0:00 Introduction
3:00 David Gross early years,
4:00 Carlo Rovelli early years
5:22 David on string theory
20:22 Carlo on string theory
31:08 David&Carlo on string theory
53:20 Loop Quantum Gravity
1:00 David&Carlo on LQG
1:21 Black Holes
1:30 Predictions and the Scientific Method

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