Futureproof Gold: What is Time?
We conventionally think of time as something simple and fundamental that flows uniformly, independently from everything else, from the past to the future, measured by clocks and watches.\n\nIn the course of time, the events of the universe succeed each other in an orderly way: pasts, presents, futures.\n\nThe past is fixed, the future open. . . . And yet all of this has turned out to be false.\n\nCarlo Rovelli is Director of the Quantum Gravity Group of the Centre de Physique Th\xe9orique (CPT) of the Aix-Marseille University and author of 'The Order of Time', he joined Jonathan to discuss.\n\nFirst aired 21/7/2018