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PhilGoetz comments on The Philosophical Implications of Quantum Information Theory - Less Wrong Discussion

5 Post author: lisper 26 February 2016 02:00AM

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Tags: travel time reality classical entanglement theory information mechanics quantum

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Comment author: PhilGoetz 26 February 2016 06:43:20AM *  2 points [-]

One of the most remarkable features of the world we live in is that we can make measurements that are consistent across space and time. By "consistent across space" I mean that you and I can look at the outcome of a measurement and agree on what that outcome was. By "consistent across time" I mean that you can make a measurement of a system at one time and then make the same measurement of that system at some later time and the results will agree.

... um, no. We can't reliably do either of those things. You need to add some qualifiers.

The rest, I didn't understand. That's to be expected, though.

Comment author: lisper 26 February 2016 06:56:04AM 0 points [-]

Well, I didn't say we could do it reliably. :-) But we can do it. You can look at something and say, "It's green" and I can look at the same thing and agree, "Yes, it is green." And then we can look at the same thing a minute later and say, "It's still green." The remarkable fact is not that we can do this 100% of the time, but that we can do it at all.

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