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Could the Universe be a giant quantum computer?
- noncomputer 3y agoAll physical theories are computational so the models of the universe are technically some model of a computer. Classical Hamiltonian mechanics is a computational model, as are all further generalizations like quantum mechanics. If a physical theory was not computable then it couldn't be used for controlling GPS satellites and landing rockets after lift off. In fact, it would be very interesting if there was a non-computational model of physics that could be used to make predictions about physical reality like planetary trajectories. This is why it's kinda silly to claim the universe is a computer because there is no competing predictive model of physical reality that is not computational.
- spacedcowboy 3y agoDouglas Adams right all along, except not thinking big enough…
- mikhailfranco 3y agoWolfram's long and rambling biography of Fredkin, with detailed accounts of their interactions: Remembering the Improbable Life of Ed Fredkin... https://writings.stephenwolfram.com/2023/08/remembering-the-improbable-life-of-ed-fredkin-1934-2023-and-his-world-of-ideas-and-stories/ https://writings.stephenwolfram.com/2023/08/remembering-the-...