The University of Colorado Boulder holds its annual Gamow Memorial Lecture around this time of the year. This year, Feb 26, 2013, Brian Greene gave the lecture, on multiverses.
His talk was very good. He explained why there are 10500 possible variations to possible universes, and ours was just one of many possible universes, thus the term multiverse.
How interesting. This is an extension of the idea that the Earth or the Sun not being at the center of our Universe.
Brian Green graciously allowed me to have my picture taken with him at the reception held in honor of him after his lecture. In the middle picture I am getting ready my new Nokia Lumia 920 Windows 8 phone.
I may not agree with string theories, but I think it is vitally important to allow all forms of physical theories to take root, and let the community of physicists & engineers determine which theories have a better chance of explaining some aspect of the universal laws of physics, through discussions and experimentations. I would add, and drive new commercially viable technologies.
Benjamin T Solomon is the author of the 12-year study An Introduction to Gravity Modification