What evidence? We have no evidence, whatsoever, that there ever was a state of "nothing." Please show me this evidence in the form of a peer reviewed paper. It is abundantly clear that scientists DON'T KNOW what happened before planck time=1.
Oi. "That which is asserted without evidence can be dismissed without evidence." --Hitchens
It's your burden, not mine.
I said what scientists believe, not what they know and what they believe comes from what they know. Does that make sense? So in that way they believe something from what the evidence is telling them.
Going back into time we come to planck time. We don't know whether there is a shorter element of time, time becomes time at planck time. So there is no time before time and time and space are considered together. It makes no sense to talk about a period of time we don't know because there was no time period at all.
Here is something that explains what I am saying:
In addition to offering a solution to the black hole information paradox, the physicists explain that the existence of minimum length and time intervals reminds us that it is important to know what questions one is allowed to ask in physics to get the correct answer. The scientists explain this idea using the analogy of a metal rod:
"We can ask, how much will a rod bend at a given force without breaking the rod? When we apply a force so great that it breaks the rod, it is meaningless to talk of bending that rod. In the same way, in gravity's rainbow, it becomes meaningless to talk of space below a certain length scale, and time below a certain interval.
"The most important lesson from this paper is that space and time exist only beyond a certain scale," Ali concluded. "There is no space and time below that scale. Hence, it is meaningless to define particles, matter, or any object, including
black holes, that exist in space and time below that scale. Thus, as long as we keep ourselves confined to the scales at which both space and time exist, we get sensible physical answers. However, when we try to ask questions at length and time intervals that are below the scales at which space and
time exist, we end up getting paradoxes and problems."
Read more at:
http://phys.org/news/2015-01-black-holes-space-theory.html#jCp
Why our laws of physics don't make sense, why we can't know what happened before planck time is that is the beginning of everything of this universe. No space existed, no matter existed, no energy existed and no time existed. Imagine this, I have a pen in my hand and a clean sheet of paper, I am bringing that pen down to the paper and I am going to draw a line. The line doesn't exist yet, the point where my pen will touch the paper doesn't exist yet and then I touch the paper with the pen and start the line. There is nothing of the line before that first touch of the pen, that first mark on the fresh paper. That first mark is like the beginning of our universe. There is no time smaller than 10-43 seconds because it is the smallest unit that can exist in time.