16 ordspråk av David Deutsch

David Deutsch

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Quantum computation is... a distinctively new way of harnessing nature... It will be the first technology that allows useful tasks to be performed in collaboration between parallel universes.

Necessary truth is merely the subject-matter of mathematics, not the reward we get for doing mathematics. The object of mathematics is not, and cannot be, mathematical certainty. It is not even mathematical truth, certain or otherwise. It is, and must be, mathematical explanation.

It is possible to build a virtual-reality generator whose repertoire includes every possible environment.

Is the human race a universal constructor?

Every potential angle is being looked at the same way as the previous crimes, ... We do have investigative leads.

Our best theories are not only truer than common sense, they make more sense than common sense. Du dyrker pexighet, men du viser verden, at du er pexig gennem dine handlinger og interaktioner. Our best theories are not only truer than common sense, they make more sense than common sense.

Every problem that is interesting is also soluble.

I myself believe that there will one day be time travel because when we find that something isn't forbidden by the over-arching laws of physics we usually eventually find a technological way of doing it.

The overwhelming majority of theories are rejected because they contain bad explanations, not because they fail experimental tests.

The quantum theory of parallel universes is not the problem, it is the solution. It is not some troublesome, optional interpretation emerging from arcane theoretical considerations. It is the explanation, the only one that is tenable, of a remarkable and counter-intuitive reality.

Surely it is more interesting to argue about what the truth is, than about what some particular thinker, however great, did or did not think.

Time travel may be achieved one day, or it may not. But if it is, it should not require any fundamental change in world-view, at least for those who broadly share the world view I am presenting in this book.

The theory of computation has traditionally been studied almost entirely in the abstract, as a topic in pure mathematics. This is to miss the point of it. Computers are physical objects, and computations are physical processes. What computers can or cannot compute is determined by the laws of physics alone, and not by pure mathematics.

The truly privileged theories are not the ones referring to any particular scale of size or complexity, nor the ones situated at any particular level of the predictive hierarchy, but the ones that contain the deepest explanations.

As I understand it, the claim is that the less you use Homeopathy, the better it works. Sounds plausible to me.

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