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DaveC426913
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#10
Nov5-05, 08:41 PM
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Quote Quote by Imparcticle
...for a defined moment in time (say a second), one person can know all that there is to know about the universe. since the universe is constantly changing, the future state cannot be stated definitely ...
This highlights an important distinction between Newton's deterministic universe and Heisenberg's "Uncertain" universe.

In Newton's universe it is, at least in principle, possible to know the position and direction of every atom (and photon) to be arbitrary degree of accuracy. Knowing this means you also know every moment in the past and every moment in the future (a la a billiards shot writ large).

HUP asserts that, even in principle, it is impossible to know everything.