GK:I disagree with the papers "pure light". That is not exactly true. Or at least accepted by most. I would be shocked if tyson said "pure light".-> You have to show me exactly what was working in an coherent manor "outside" of this universe to create us. The QM take, or this thing working in a QM environment would also have to be explained in a "something we know based" model. That being exactly what is working in QM model. -Try this to help you:- http://en.wikipedia.org/wiki/Big_Bang#mediaviewer/File:History_of_the_Universe.svg-Note photons first