When I was a small boy I had a long broomstick in my hand. I was playing in the backyard. My Dad called me from the front driveway. I ran towards him to see what he wanted. The front fence gate was about 3 feet wide. My broomstick was about 4 1/2 feet long. As I crossed through the fence, each side of the broomstick hit a fence post. (The broomstick being wider than the opening to the front gate.) My own momentum carried me in a summersault over the broomstick. With a big thud I landed on my back.
I remember my father running up to see if I was okay. What I most remember is the look of disappointment on his face. I think at this point he had suddenly realized his progeny was not going to be a Nobel prize winner, a heart surgeon, or a renowned physicist. I'm pretty sure he saw into the future, and I still remember that day.
Sorry Ellisredfish, I can't help you ... I'm obviously not qualified to keep up with Mr Hawking.