Monday, February 25, 2013

Understanding Nothing

I like this--

A Guide to Understanding Nothing | Think Tank | Big Think: " . ... As Krauss points out, "once you apply the laws of quantum mechanics to gravity itself, then space itself becomes a quantum mechanical variable and fluctuates in and out of existence and you can literally, by the laws of quantum mechanics, create universes." What about the laws of physics? The laws of nature? These laws themselves are somehow something. "That is not at all obvious or clear or necessary, says Krauss. In fact, "we now have good reason to believe that even the laws of physics themselves are kind of arbitrary." For instance, there may be an infinite number of universes, and in each universe that has been created, the laws of physics are different. "The laws themselves come into existence when the universe comes into existence," Krauss says. In other words, there is no pre-existing fundamental law. Anything that can happen, does happen. So what are we left with? No laws, no space, no time, no particles, no radiation. That’s a pretty good definition of nothing. . . . "

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