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Message: <blockquote data-quote="Umbran" data-source="post: 2672385" data-attributes="member: 177">Ah, but you see, until you get inside the event horizon, a black hole is not fundamentally different from any other massive object.  A black hole bends light in exactly the same way a star of the same mass does.  You are correct that inside, all bets are off.  But then, the stuff inside cannot communicate with the rest of the universe anyway, so what happens inside hardly matters. <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile    :)"  data-smilie="1"data-shortname=":)" />Not really - because if you can't percieve the thing, or the thing's effects, then it isn't really part of your universe.  And if you can percieve the thing, or it's effects, you can know about it.  We'd detect it the same way we detect everything, by watching it interact with other things.  We measure the speed of light by knowing when it left point A, and detecting when it interacts with something at point B.  It moves faster than anything else in the Universe, so it isn't like we see it coming to point B, or watch it as it goes along.  We wait until it gets there, and figure out how long the trip took after the fact. This hypothetical thing that moves faster than light would be no different.  Believe me, it isn't as if people have not been searching for evidence of things that move faster than light.  They've been searching since Einstein posited that C was a constant for all observers.  And they haven't found anything yet.If what you said were true, that light increased in speed as it fell inward to a massive body, then we should be able to measure the difference.  Experiments to test this have been done.  The thing you describe is not observed to occur.  Instead, something else occurs - instead of speeding up, the light shifts frequency.  The frequency shifts just enough to cover the energy gain or loss that we expect to occur.  So, if the speed were to change as well, where would the extra energy be coming from or going to?Nobody but you has said anything about our understanding being absolute.  But new theories do have to be consistent with the observations we already have.  And those observations are not consistent with your hypothesis.</blockquote>

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