One of my greatest idols is Albert Einstein. He was obsessed by light and provided so much input into his theories on motion, gravity and even space time it's self because of it. When I think about it all though I find a lot of argument. One thing I think about a lot is how he said nothing can travel faster than the speed of light. If nothing can travel faster than the speed of light, then how do black holes "exist" in our dimension? There's theories on the graviton right? Then shouldn't the graviton be traveling faster than the speed of light if it's strong enough to make light break it's own barrier? I don't understand how light could be the last barrier when things theoretically accell that speed. I guess what I'm asking is, do you believe light is the final barrier or do you believe gravity could have a barrier of it's own?