167 | Chiara Marletto on Constructor Theory, Physics, and Possibility (opens in new tab)

Traditional physics works within the "Laplacian paradigm": you give me the state of the universe (or some closed system), some equations of motion, then I use those equations to evolve the system through time. Constructor theory proposes an alternative paradigm: to think of physical systems in terms of counterfactuals — the set of rules governing what can and cannot happen. Originally proposed by David Deutsch, constructor theory has been developed by today's guest, Chiara Marletto, and other...