My objection is not that you present this as a tantalizing possibility of the nature of our universe. My objection is that you bank on this as a certainty, and do so with no evidence to support it.
I consider Scripture certain. The only issue is what science knows that could relate to this.
You state (as well as scientists) that we can not "know" or be for certain that laws of nature are the same at every point in our universe (which is why science calls it an "assumption" rather than a "theory", "hypothesis", "fact" or "law").
I actually have not gotten much into that particular aspect of the debate. The issue with deep space is whether time and space as we know it here on earth (and fishbowl) is the very same or not, and if science knows. That is important because all the distances and long ages of billions of years require uniformity. I have avoided the matter of what laws might exist out there, because when we see the light from out there it all seems to obey the same laws. There is no real need to deal with whether some additional laws or forces might also be out there that are not here, or etc etc. It is a bit like hunting a deer. If we shoot the deer in the woods and it dies, then there is no need to go cut off it's head or shoot it a dozen times or etc because it is already dead. Likewise, with the cosmological theories on deep space, if time is different, that 'kills' the whole standard model and distances and sizes and etc etc etc. There is no need to then go and 'cut off the deer's head' because it is already dead!
But if that is true, you can not "know" that there are (or were) times or places where the natural laws behaved differently within our universe.
On earth, the issue is the forces and laws that existed long ago. We don't know what they were. Out in far space that is not the issue, time is.
Putting the cart before the horse. Before you can stipulate that we can not know anything "before or after the flood", you must first show the existence of the flood to begin with. Attempts at doing this have failed to be convincing.
Science cannot show the existence or non existence of the flood. Period. Either claim is one based on faith. Since science is out of the picture in that debate, we need to look around and see if there are any other evidences in the world, such as ancient records, common stories of a flood of some sort, Scripture records, etc.
If you wish to limit yourself only to science, then it is easy. You may not know either way! Just admit ignorance. No discussion needed. Either you show the real science that demonstrates one way or the other there was or was not a flood, or science is out of the loop. Sidelined.
The Bible is not history.
There is a long history of doubters of the bible being silenced with archaeological finds actually. There is no doubt that many of the characters of the New testament were actual people. There is no evidence any of the characters in the old testament were not real. The records were not just word of mouth of individuals telling stories. The records were carefully kept by a NATION! A nation that happened to kill any false prophets by the way!
History does not confirm that nature was different in the past.
[/QUOTE] False. The long life spans recorded in Sumer (despite any inaccuracy of pagan records) do tell us that people lived very much longer. The fact that spirits were a part of life also show that nature was not as now. (example, Egypt lists the early kings as gods or spirit beings)