Edit: now I see what you said and the example of the sun. It seemed strange at first read because suddenly you are acknowledging the main reason I brought up the various examples without, it seemed to me, referring to my main point. I guess, when I am in similar situations, I tend to acknowledge the main point directly, and point out that I have a problem only with a specific point, so that my post does not seem like a potshot acting as if it is countering the main idea.
The sun going up and down is a good example I could have added to my list to support my point.
No problem. Perhaps you will actually respond to the main point I was making. Or not. I think we are off topic focusing on the Big Bang issue without relating it to the OP. My points about counterintuitive truths being a big problem for deduction related to my problem with the OP, which is very confident about extremely abstract deduction. Care to respond to my main point?
As far as the Big Bang...
There are definitely a good number of physicists who do not believe there has to be or was a before.
http://www.fortunecity.com/emachines/e11/86/big-bang.html
There are some who do.
In a thread where an atheist is attacking religion using speculative and poor deduction, it is certainly valid to point out that physicists do not assume that there must be a before and that lay people may be too confident in they assumptions about this issue.
For those representing 'rationality' and science it would be best to consider why scientists rely so much on inductive processes.
You can quote those physicists who say there was a before OR MIGHT HAVE BEEN - which I think is the more common position.
But this will only show the issue is up in the air.
The OP makes it seem like using this kind of deduction we can close the book on the theists - or really certain Abrahamic theists.
Not so fast.
This kind of deduction is misleading and neither group of physicists is going to accept the mere deductive reasoning of the other group.
I am not saying the deduction is wrong. I am saying it is not remotely conclusive.
I'll keep that item on my list.