So we, and everything we see, result out of quantum fluctuations in what is essentially nothingness near the beginning of time, namely during the inflationary expansion.

Quote in context: 

“This results in the second amazing implication of inflation: That small density fluctuations in empty space, due to the rules of quantum mechanics, will later be responsible for all the structure we observe in the universe today.   

So we, and everything we see, result out of quantum fluctuations in what is essentially nothingness near the beginning of time, namely during the inflationary expansion.    

After all the dust has settled, the generic configuration of the matter and radiation will be that of an essentially flat universe, one in which the average Newtonian gravitational energy of all objects will appear to be zero.”

— Lawrence Krauss, A Universe From Nothing: Why There is Something Rather than Nothing (2012)

http://en.wikipedia.org/wiki/Lawrence_M._Krauss

http://books.google.com/books/about/A_Universe_from_Nothing.html?id=nfGlsiDGbxkC

See also an excellent talk on the subject from 2009: http://www.youtube.com/watch?v=7ImvlS8PLIo

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