> I'll use Isaac Arthur dismissal of FTL travel as to why what credentials does he have? > Put me firmly in the camp that believes the speed of light is a har

> I'll use Isaac Arthur dismissal of FTL travel as to why what credentials does he have? > Put me firmly in the camp that believes the speed of light is a hard limit on the universe the speed of light isn't a limit in the sense that nothing can be greater than it. it is a crossover point that can't be crossed over for things above or below it to the other side. > I'm not sure why it matters that a black hole would be spinning. black holes that spin are much different than non-spinning holes and have more complicated dynamics. if they are spinning, they are dragging space-time along with them. see this paper that shows some actual visuals of what a spinning black hole might look like and what it does to the light around it. https://arxiv.org/abs/1502.03808 https://arxiv.org/abs/1502.03808