I have heard one possibility for the weakness of gravity to be the existence of extra dimensions.
http://www.learner.org/courses/physics/u...4&secNum=6
Quote:In a scenario that contains a large number of extra dimensions but confines the fundamental forces other than gravity on a 3-brane, only the strength of gravity is diluted by the other dimensions. In this case, the weakness of gravity could literally be due to the large unobserved volume in extra spacetime dimensions.
http://www.learner.org/courses/physics/u...4&secNum=6
You can fix ignorance, you can't fix stupid.
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