Copy of a post to http://www.math.columbia.edu/~woit/blog/ (in case it is deleted for being 'off-topic' ;).
‘... The draw of string theory isn’t its strong scientific credentials, it is the weakness of any competition.’-Gavin
Dirac had a sea of particles and holes to visually use his equation to predict antimatter. Similarly, to the holes and electrons model of a semiconductor, the outward flow of matter in the big bang gives an inward flow of spacetime fabric. If you consider a sealed corridor with loads of people at one end, walking towards the other end, the mass of air flows the opposite way to the way the people are going. You know this not only from the fact that air flows around you to fill in the space behind you as you move, but also because the corridor starts full of people at one end and air at the other, and ends up the other way around.
The surrounding Higgs field similarly pushes inwards as stars go outward. In any explosion there is some outward pressure, and if we multiply this by the spherical surface area, we get outward force. Newton's 3rd law says there’s equal inward force (the rocket effect). This is the zone of inward ‘reversed wind’ phase in an air burst, but is the inward Higgs field pressure/force in a big bang. I've a couple of simple calculations at http://nigelcook0.tripod.com/ which predict gravity from this mechanism fairly accurately (1.7% error using convenient data from the literature for the Hubble parameter and density) as well as predicting other stuff about cosmology.
Strong competition is not science but religion. I predict string theory will disappear when the Pope issues a dictum stating spacetime is just 4 dimensional. Real science is a messy business, with retrogression to new interpretations of old "obsolete" ideas. People are ‘branewashed’ by superstringers and other cranks about the nature of reality, they want a final theory in the form of abstract equations and extra dimensions, not obsolete mechanism, so string theory is infallible. This is not good!
UPDATE: I'm not planning to continue with this weblog any longer. All I get is ignorant arguments from Kevin (http://electrogravity.blogspot.com/2005/10/electrons-pass-pulse-of-energy-along.html) which go nowhere. Kevin does not know anything about explosion physics. I respect freedom so will let people comment what they want, which will mean people will 'branewash' each other into discrediting science and believing instead on speculations without evidence.