Paddoboy; Ok, let us see about this statement. The figure comes from calculated Planck's Time, mathematical jargon, but thats later. Just yesterday only, someone made a statement about design (& measurement thereof) of exact proper time clocks. The open problem is this period from t = 0 to 10^-43 seconds referes to which frame, do we really know (or can we really speculate) about the flow rate of time just after big bang.....like when you push your maths from today to t = 0, which reference you take....Earth ? But won't the time dilation starts if your computer starts contracting towards t = 0 ? Anyway you won't know this, but think about it, how absurd it is to talk like 10^-43 seconds without really knowing what it represents. You will say that it was an explosion of space, fine then it was the explosion of time also in a sense how are we so sure about the flow rate of time then ?