Bearing in mind I don't know a lot (as I'm still learning this stuff) - this doesn't seem to make sense compared to the Calabi-Yau model which helps us to understand gravity's behaviour (it getting weaker as the universe expands).
Bubbles, well... this doesn't make sense. I think that group drank too much soda that day. I'll stick with what little I know on Calabi-Yau - it makes more sense.
Unless of course the science forum guys throw their two cents worth in and make me realise otherwise.
I'll have to knock on the science forum door and wake Carl, Craig, and Stephen up take a look at this.
Perhaps this should have been posted in the science section.