There’s zero experimental evidence to suggest this. I actually went down a fairly deep rabbit hole to try and get to why GR proponents believe > C travel allow

There’s zero experimental evidence to suggest this. I actually went down a fairly deep rabbit hole to try and get to why GR proponents believe > C travel allows for “breaking causality”. It basically comes down to a box plot mechanism they have breaking down when FTL is used, and is absurd. I’ve yet to see any evidence that FTL would break causality.