If you would like to, you take take a look at the video here http://youtu.be/A2IOOnAdP2s
directly from 32'38". It won't take you too much time. The whole argument starts from "the cause", and I think it probably went wrong in the end. And the main problem to me is that he says time stops. But according to relativity, time doesn't stop but simply looks slow from the outside observer. The clock which falls into the black hole still ticks at its own pace. Time doesn't stop inside the event horizon. But here in this documentary, Dr. Hawking suggests the idea that the very beginning of the universe is a big black hole and time stops,... he says there was no time. This contradicts what we know from the relativity. There is time. Just ticks in a different pace from the outside of the black whole.