(March 13, 2014 at 5:13 am)Alex K Wrote: Are you looking for a cause? Then you are out of luck, since cause and effect are only applicable in the macroscopic realm within our universe.
I think it's more accurate to say we lack the ability to observe/measure the effects of any potential events preceding the Big Bang. This is where someone usually jumps in to state something like the Big Bang is t=0 and there is no t<0. The Big Bang is t=0 because we say it is, and it fits with our idea of spacetime, but I think it is wrong to cut off speculation on what existed/happened before The Big Bang because of this designation.
Lacking the ability to answer certain questions doesn't mean the questions aren't valid; such as: Could the singularity that created the universe come from a previous collapsing universe? Are there more than one universe? What caused the singularity? Are there more universe creating singularities? etc.
