>If the speed of light of this universe was raised significantly, is there some point where black holes would be impossible to form? If the speed of light was

>If the speed of light of this universe was raised significantly, is there some point where black holes would be impossible to form? If the speed of light was infinite, yes, but a lot of physics relies on the speed of light being finite. Pretty much everything breaks (e.g. mass) if you have an infinite speed of light. >I assume if the speed of light were lowered black holes would become far more common? Yep. It might clarify things a bit to say that the "speed of light" is a misleading name - it's really more about being the speed of causality, the speed at which things happen.