[2012-Jul-13] Pseudorandom

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July 13 - Deterministic choices at a quantum scale?

Postby Matt » Wed Jul 18, 2012 8:10 pm

Hello everybody,

I have a question about this comic:

Second drawing (With the graph) it says: "We were too macroscopic to access quantum randomness, so we didn't meet sufficient conditions for deterministic choices"

But, deterministic physics happens precisely at a macro-scale, no? It should be the fact that we have a machine giving access to smaller levels that makes our choices non-deterministic, not the opposite

I don't really understand what this comic is trying to say, anyway...

Can somebody help? :)

Re: July 13 - Deterministic choices at a quantum scale?

Postby Lethal Interjection » Wed Jul 18, 2012 8:40 pm

Matt wrote:
Can somebody help? :)

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Re: July 13 (?) Pseudorandom

Postby GUTCHUCKER » Thu Jul 19, 2012 3:26 am

Sorry, but no!
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Re: July 13 (?) Pseudorandom

Postby Sahan » Thu Jul 19, 2012 8:06 am

Well I'm sure somebody could, if they really wanted to. But no.

Even at the macroscopic level, observables like position and momentum cannot both be determined precisely due to the Heisenberg Uncertainty principle, so it isn't truly deterministic. But at such a large scale, the uncertainty due to even the most precise of measurement devices is far greater than this quantum-level uncertainty, so it is effectively ignored.
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