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Why can't anything go faster than the speed of light?

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slenkar
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23 Dec 2015, 6:23 pm

eric76 wrote:
If I remember correctly from looking at the article when you posted the link, it mentions the "quantum foam". That doesn't mean a fine scale structure similar to something like styrofoam. Rather, it is referring to the fact that if we pick a tiny enough volume, we uncertainty of how much energy is in that volume is enormous. At that scale, the universe is in constant flux -- the spacetime is completely unpredictable and varies enormously from instant to instant.


Quote from the 'grain' article
"Combine these two ideas and the implication is that space and time have a structure"



eric76
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23 Dec 2015, 8:43 pm

slenkar wrote:
"Combine these two ideas and the implication is that space and time have a structure"


Structure, yes, but not the slightest bit in the sense that you are thinking of. There is nothing static about that structure as there would be if it were some kind of grain. Instead, it is constantly changing energy, the creation and annihilation of particles, of wormholes, and of black holes far tinier than an electron. Spacetime isn't empty, but it is hardly some kind of grain no matter what some newspaper publishes.