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Comment Re:Quantum Mechanics cannot be simulated ... (Score 1) 529

You are right.
But, the question is not if we are in a *correct* simulation, but whether we are in a simulation good enough to fool humanity.
For something like this, they would only have to worry about the relatively small number of people who are actually conducting experiments on quantum physics.
For the rest of us, solving for some "macroscopic" quantities such as thermodynamic quantities would be good enough, since we would simply ignore the noise term coming from their errors as being part of thermal noise anyway.

In any case, my feeling is their approach is wrong first of all because when we are trying to simulate the universe we are doing it differently.
Why would the transcedental geeks do it in a way we ourselves wouldn't aprove of?

Comment Re:Half a test. (Score 2) 529

You're right, but to be honest, all of physics is the same.
Theoreticians come up with a mathematical model to explain observations, those models make predictions about stuff that hasn't been observed yet, and experimentalists check those predictions.
If the experiments come out as the theoreticians predicted, we say the mathematical model is "reality".
However, there are clear examples where this method fails: the various competing models of exotic physics, that we can't experiment on, because the experiments are too expensive.

So we never prove that the mathematical model is the perfect description of the underlying reality, we just prove that it is undistinguishable, within experimental error, from the perfect description.

Games

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PC Games (Games)

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Comment Re:Considering... (Score 2, Insightful) 157

you do realize that there are communities in Africa where you can take two random people, check how much their DNA differs, and you will find that that difference is "bigger" than the differences between most "Europeans" and "Asians", right?
the color of people's skin is related to the amount of sun their ancestors had to deal with. I'm not sure how long back in time, but probably a lot. the length of people's limbs and the thickness of their body has to do with the amount of heat their ancestors had to dissipate. that's about it.

what this means in practice is that if you take blueeyed whiteskinned northern people, and you put them on a tropical island, and you check again in N generations (I'm not sure how large N is, but it shouldn't be very large), then you will find black eyed people with darker skin, only because it's easier to live there with these properties. in fact, I don't think it would be very easy to convince blue eyed whiteskinned northern people to go live on a tropical island...

back to the issue of DNA differences: unless you have training in the area, don't try to draw conclusions, because these are complicated issues. for instance I read somewhere that when all you have to work with are bones, then you can say that two specimens are different species; but when you look at the DNA, you might say that they are indeed the same species. for instance pygmies are homo sapiens.

my advice to you is to either get a degree in the field, or stop believing what people said 100 years ago, when it was still acceptable to be a racist in many circles (thus the biased conclusions you've been reading).

Comment Re:Velocity? (Score 1) 121

true, not a significant fraction of c.
but take into account that relativistic effects are noticeable (on the scale of 100 years) for Mercury, which orbits between 0.3 and 0.4 AU from the Sun. also take into account that these are heavy objects, and we might find that a satellite moving between these two stars could be used to study relativistic effects. I'm not gonna try to compute anything, but relativistic effects are noticeable for GPS satellites, so what I said must make sense.

obviously, the interesting results would be found if the poor thing didn't burn first...

Comment Re:CD Jewel cases (Score 1) 267

me too. books have to be opened this way too if you need to hold them in your hands for some reason.
all of this is valid if you insist to look at the front cover the right way while you open them. otherwise you can simply turn the cd case around, and do the mirror movements; and you can simply do a perfectly symmetrical movement with books.

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