Something from Nothing

[popeyespappy]

When people like Krauss and Hawking talk about a universe from nothing or it makes no sense to talk about before the Big Bang they are being a bit deceitful. They are being deceitful because while they believe it is possible maybe even probable that our particular X, Y, Z, + T observable universe began with the Big Bang they also believe there was probably a background something that it came from.

String Theory is currently the leading theory on what that something is. Krauss even believes that if String Theory is true then a multiverse is probable. If a multiverse is true then there are other spacetime universes besides ours.

String Theory isn’t the only possibility though, and the Big Bang is far from confirmed. Other possibilities include our universe is cyclic. expanding and collapsing over and over again. Another possibility is it could be the result of the collapse of the false vacuum of a previous higher energy vacuum.

Krauss himself talks about some of this in this short article about the limits of knowledge.