“then everything we know about the universe is wrong”
Even if faster than light travel is possible, this isn’t true. It’s hyperbole. Was everything we knew about the universe wrong when Newton was proved wrong? No. We still follow him, in the limited shpere where he applies (i.e. inbetween atoms and planets), like we’ve done since the 17th century. We’ve stuck with Einstein despite his system being overturned by quantum physics, which some people date to five years before his development of the Special Theory of Relativity.
We will stick with nearly everything we know, if this is true, except that which is directly affected by the possibility of faster than light travel.
cosmology will be affected hugely. distances are measured/calculated assuming light speed is constant. And E=Mc^2 needs to be rethought/modified.
Exactly. People like to talk about throwing out everything we know when there's some suprising develpment. It's nonsense.
"We’ve stuck with Einstein despite his system being overturned by quantum physics, which some people date to five years before his development of the Special Theory of Relativity."
A correction to this though. Quantum physics did not overturn relativity. Both theories have been tested to extreme degrees and both are accepted foundational theories of physics. They just don't have much overlap.