Here we discuss the inherent differences between classical and quantum physics. Systems representing both can exhibit "unpredictable" behaviour - so what is the difference? In classical physics chaos theory is a genuine phenomena - but only in theory. The real world does not obey classical physics. It obeys quantum theory and there, that kind of "chaos" simply does not happen. The Butterfly effect is therefore false in reality for reasons explained herein. Those classical effects cause classical systems to be unpredictable due to the sensitivity of systems to initial conditions which cannot be specified, or known, with perfect precision. But quantum systems can be "intractable" making them unpredictable for different reasons. Rather than being a barrier to knowledge and computation this is an opportunity. We discuss Feynman and then Deutsch's own contribution to the field of quantum computation.
Ep 86: The Aim of Science
Ep 85: ToKCast Do Explain Part 2
Ep 84: David Deutsch answers a question about the nature of the laws of physics (a question for David: 7).
Ep 83: "The Science of Information" (Chiara Marletto's "The Science of Can & Can't" (Pt 2: Readings & more)
Ep 82: David Deutsch answers a question about Gödel and undecidability. (A question for David number 6).
Ep 81: "The Science of Information" (Chiara Marletto's "The Science of Can & Can't" (A prelude to Ch 3)
Ep 80: David Deutsch's "The Fabric of Reality" Chapter 2 “Shadows”
Ep 79: David Deutsch answers a question about our environment. A question for David 5.
Ep 78: ToKCast's "Do Explain" Part 1
Ep 77: David Deutsch's "The Fabric of Reality" Chapter 1 "The Theory of Everything" Part 3
Ep 76: David Deutsch and Tyler Cowen: Reaction
Ep 75: It's not scientific and it's not American
Ep 74: Chiara Marletto's "The Science of Can and Can't" Episode 3
Ep 73: David Deutsch on "Truth". A question for David 4.
Ep 72: David Deutsch comments on recent UFO sighting (The "Tictac" issue). A question for David 3.
Ep 71: David Deutsch explains "explanations" further. (A "question for David" 2)
Ep 70: A question for David 1
Ep 69: "The Beginning" Part 4. The Final episode.
Ep 68: Crypto Comments
Ep 67:"The Fabric of Reality" episode 2.
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