Quotes About Uncertainty

If there really is a complete unified theory that governs everything, it presumably also determines your actions. But it does so in a way that is impossible to calculate for an organism that is as complicated as a human being. The reason we say that humans have free will is because we can't predict what they will do.

It is not clear that intelligence has any long-term survival value.

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory.

You cannot predict the future.

There is no way that we can predict the weather six months ahead beyond giving the seasonal average

God not only plays dice, he also sometimes throws the dice where they cannot be seen.

Science seems to have uncovered a set of laws that, within the limits set by the uncertainty principle, tell us how the universe will develop with time, if we know its state at any one time. These laws may have originally been decreed by God, but it appears that he has since left the universe to evolve according to them and does not now intervene in it.

Heisenberg's uncertainty principle is a fundamental, inescapable property of the world. The

The uncertainty principle signaled an end to Laplace's dream of a theory of science, a model of the universe that would be completely deterministic: one certainly cannot predict future events exactly if one cannot even measure the present state of the universe precisely! We could still imagine that there is a set of laws that determine events completely for some supernatural being, who could observe the present state of the universe without disturbing it.

I hope for the best. I have to. We have no other option.

Feynman once wrote, "I think I can safely say that nobody understands quantum mechanics.

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory.

In general, quantum mechanics does not predict a single definite result for an observation. Instead, it predicts a number of different possible outcomes and tells us how likely each of these is.

The uncertainty principle signaled an end to Laplace's dream of a theory of science, a model of the universe that would be completely deterministic: one certainly cannot predict future events exactly if one cannot even measure the present state of the universe precisely!

Parece que en la naturaleza hay un cierto nivel de aleatoriedad o incertidumbre, que no se puede eliminar por muy buenas que sean las teorías. Eso se puede resumir en el Principio de Incertidumbre, formulado en 1927 por el científico alemán Werner Heisenberg.

Given the state of a system at some time, the laws of nature determine the probabilities of various futures and pasts rather than determining the future and past with certainty.

Only time (whatever that may be) will tell.

redefining the goal of science: our aim is to formulate a set of laws that enables us to predict events only up to the limit set by the uncertainty principle.

Thus the possibility of time travel remains open. But I'm not going to bet on it. My opponent might have the unfair advantage of knowing the future.

One way or another, I regard it as almost inevitable that either a nuclear confrontation or environmental catastrophe will cripple the Earth at some point in the next 1,000 years

Personally, I get uneasy when people, especially theoretical physicists, talk about consciousness. Consciousness is not a quality that one can measure from the outside. If a little green man were to appear on our doorstep tomorrow, we do not have a way of telling if he was conscious and self-aware or was just a robot.

Heisenberg mostrou que a incerteza na posição da partícula multiplicada pela incerteza em sua velocidade multiplicada pela massa da partícula nunca pode ser menor do que um valor específico, conhecido como constante de Planck.

Indeed, if it were, it would by definition not be random. In modern times, we have effectively removed the third possibility above by redefining the goal of science: our aim is to formulate a set of laws that enables us to predict events only up to the limit set by the uncertainty principle.

Când aveam 12 ani, unul dintre prietenii mei a pariat cu un altul, pe o pung? de bomboane, c? n-o s? se aleag? nimic de mine. Nu ÅŸtiu dac? pariul a fost respectat ÅŸi, dac? da, care dintre cei doi a avut dreptate.