> Haven’t we basically proven that even horizon is real? We haven’t observed event horizons except as fuzzy highly processed images. They look a lot like what

> Haven’t we basically proven that even horizon is real? We haven’t observed event horizons except as fuzzy highly processed images. They look a lot like what you’d expect from a black hole, but we have hardly ruled out all possibilities. And there are theoretical effects near an event horizon for charged and spinning black holes, that as far as I know we’ve never been able to observe. It doesn’t seem out of the question that a black hole without a singularity might exhibit behaviour near the event horizon that is measurably different from the theories we have now.