vendredi 20 février 2015

Tegmark Blames Infinity for Ruining Physics

Maybe a little hyperbole there, but an interesting article:



"Physics is all about predicting the future from the past, but inflation seems to sabotage this. When we try to predict the probability that something particular will happen, inflation always gives the same useless answer: infinity divided by infinity. The problem is that whatever experiment you make, inflation predicts there will be infinitely many copies of you, far away in our infinite space, obtaining each physically possible outcome; and despite years of teeth-grinding in the cosmology community, no consensus has emerged on how to extract sensible answers from these infinities. So, strictly speaking, we physicists can no longer predict anything at all!



This means that today’s best theories need a major shakeup by retiring an incorrect assumption. Which one? Here’s my prime suspect: ∞
."

http://ift.tt/17CqD5w





via International Skeptics Forum http://ift.tt/1F6tQ8x

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