As far as I am aware the current theory (most popular) for the creation of the universe was that it arose from a singularity. This singularity exploded (The Big Bang) and created the universe as we know it. Now for all changes that occur, whether it be an explosion, a landslide, an earthquake or even the thoughts of a poster, something must trigger it. This is an application of logic not physical laws (debatable) and therefore I believe a trigger or flaw or impurity in the singularity would be necessary. In other words it can't suddenly decide to go bang. Is that thinking correct? What would give rise to such a external force or inherent flaw? CC p.s. Its hard to talk about events without invoking a time element like 'suddenly'.