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Originally Posted by Kaijo
Because what is being lost is fuel. It's sorta like the oil we keep pulling out the ground, in that it will eventually be gone. Sure, new oil can be made... but we aren't reclaiming any oil from the gasoline that is burned. Even if we empty this planet, and pull oil from other planets and keep going, eventually after billions or trillions of years, we'll run the universe out of oil.
There is a finite amount; that goes for solar energy (of which practically every other form of energy is derived), and oil.
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This cyclical bit is what you pass over when you say a sun dies and it's gone. The universe's systems still reuses these "spent" energy sources much more than the explanations you used star death for earlier.
Quote:
Originally Posted by Kaijo
Because Gen is using science; he specifically quoted the second law of thermodynamics and used terms like Entropy. It would be like if a show referenced gravity; unless stated otherwise, we go on what we currently know about gravity.
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Oh good, then the argument about entropy is moot and QB is just lying for cheap and easy spaceship gas because of what loop quantum cosmology implies about cosmic inflation and the inevitable reheating and Big Crunch that will occur in a cyclic model of the universe. Rather, they're pretty sloppy to not find a way to harvest dark energy as it's accelerating entropy by expanding the universe.
Real science will kind of take the fun out of it.