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Gerardus 't Hooft
8 quotes
“If you really want to contribute to our theoretical understanding of physical laws — and it is an exciting experience if you succeed! — there are many things you need to know. First of all, be serious about it!”
Gerardus 't Hooft (born 1946) wikiquote, CC BY-SA 4.0 source
“On your way towards becoming a bad theoretician, take your own immature theory, stop checking it for mistakes, don't listen to colleagues who do spot weaknesses, and start admiring your own infallible intelligence.”
Gerardus 't Hooft (born 1946) wikiquote, CC BY-SA 4.0 source
“Quantum mechanics as it stands would be perfect if we didn't have the quantum-gravity issue and a few other very deep fundamental problems.”
Gerardus 't Hooft (born 1946) wikiquote, CC BY-SA 4.0 source
“When investigating theories at the tiniest conceivable scales in nature, almost all researchers today revert to the quantum language, accepting the verdict from the Copenhagen doctrine that the only way to describe what is going on will always involve states in HIlbert space, controlled by operator equations.”
Gerardus 't Hooft (born 1946) wikiquote, CC BY-SA 4.0 source
“... trying to solve a paradox will lead to new kinds of understanding. And I think that the problem of subjecting black holes to quantum mechanics is a fundamental paradox of the same nature, and the same depth, and the same importance as the paradox that Max Planck was studying at the beginning of the twentieth century.”
Gerardus 't Hooft (born 1946) wikiquote, CC BY-SA 4.0 source
“Deterministic underlying theories for QM are possible. They are still difficult to construct, but simple "toy models" are possible. These models are not good enough to replace today's existing quantum theories.”
Gerardus 't Hooft (born 1946) wikiquote, CC BY-SA 4.0 source
“The usual no-go theorems telling us that hidden variables are irreconcilable with locality, appear to start with fairly conventional pictures of particle systems, detectors, space and time. Usually, it is taken for granted that events at one place in the universe can be described independently from what happens elsewhere. Perhaps one has to search for descriptions where the situation is more complex. Maybe, it needs not be half as complex as superstring theory itself. The conventional Copenhagen interpretation of quantum mechanics suffices to answer all practical questions concerning conventional experiments with quantum mechanics, and the outcome of experiments such as that of Aspect et al can be precisely predicted by conventional quantum mechanics. This is used by some to state that no additional interpretation prescriptions for quantum mechanics are necessary. Yet we insist that the axioms for any "complete" quantum theory for the entire cosmos would present us with as yet unresolved paradoxes.”
Gerardus 't Hooft (born 1946) wikiquote, CC BY-SA 4.0 source
“In practice, quantum mechanics merely gives predictions with probabilities attached. This should be considered as a normal and quite acceptable feature of predictions made by science: different possible outcomes with different probabilities. In the world that is familiar to us, we always have such a situation when we make predictions. Thus the question remains: What is the reality described by quantum theories? I claim that we can attribute the fact that our predictions come with probability distributions to the fact that not all relevant data for the predictions are known to us, in particular important features of the initial state.”
Gerardus 't Hooft (born 1946) first seen 2017 wikiquote, CC BY-SA 4.0 source
Recorded in: Q&A: Gerard 't Hooft on the future of quantum mechanics, Physics Today, 11 July 2017