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Comment Re:Net energy? (Score 1) 580

Of course. But it might still be a good way to balance a grid with a lot of variability from renewable sources. Having to dump your electricity on the market at negative prices is a bad thing as it just increases the cost of electricity at the times when there isn't an excess.

This could fix that. much wind/solar? Turn on the petrol synthesizers to absorb the cheap excess power.

Then again, maybe the capital cost would be too high to justify anything else than running the synthesizers 24/7. I have no idea.

Comment Re:Heh (Score 1) 241

Yes, the fact that the inhabitants of a simulation can't tell the difference between real or simulated is self-evident, that's indeed the premise of the thought experiment.

But the goal of the thought experiment isn't to prove whether our world is real or not, it's just to illustrate the *possibility* that our world is not real. It's to make you stop and think about what "real" means anyway.

Comment Re:Heh (Score 1) 241

That's the point of the thought experiment: if the simulation is good enough, you can't distinguish if you are real or simulated. So we can't know whether our reality is "real" or not. Personally I resolve this with modal realism: "real" is relative to the world you find yourself in. What's an imaginary world to me is "real" to its inhabitants, and vice versa.

Comment Re:Heh (Score 1) 241

That can be fixed with a small modification to the thought experiment. Do not let the experimenter and his copy communicate. Instead, give both a set of results of experiments which were done in the real world, and ask them to determine if they are in the real world or not by comparing the outcomes of their own experiments to the given results.

Comment Re:Why does Interpol even acknowledge this?! (Score 5, Informative) 604

What is even worse is that Interpol acknowledges blasphemy as a crime.

According to article 3 of Interpol's own constitution, they are explicitly forbidden to engage in matters of religious character. So either they were deceived about the nature of the "crime" or they ignored their own principles.

Comment Photolithography (Score 1) 145

Perhaps this has applications for silicon photolithography?

The semiconductor industry is already using ultraviolet because the minimum feature size created by photolithography is limited by the wavelength of the light. X-rays have a wavelength of about 1 nanometer (< 5 Si atoms). That should be small enough to push silicon semiconductors to their ultimate limit.

Comment Re:the assumptions are assinine (Score 1) 482

First of all the totality of energy available on the earth is not limited to the amount of sunshine falling upon it divided by an arbitrary efficiency of photovoltaic cells. Tide and geothermal are of value as well.

TFA explores the idea of capturing the entire energy output of the sun, and you are bickering over crumbs like geothermal?

Furthermore no one is of the opinion that unchecked exponential growth is sustainable in the long term

What? Our entire society is currently structured around the assumption that economic growth will continue indefinitely. If you hadn't noticed, zero growth in an economy is widely considered to be a disaster. But even modest growth of 1%/year is actually unchecked exponential growth.

Comment Space isn't the answer (Score 1) 482

Time to stop breeding, folks, or to get our butts into space.

Apparently the submitter didn't RTFA or didn't get the main point. We would be consuming the energy output of our entire galaxy within 2500 years if we try to sustain the current growth rate. And it would be 2 galaxies only 10 years after that, then 4, 8, 16, ... The point is that exponential growth can consume seemingly limitless amounts of resources in much shorter spans of time than you would intuitively expect.

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