It is possible to make a number of predictions about what you'd expect to see in the rocks if there had been a global flood around 5000 years ago. Coyoteman is an archeologist who can date continuous settlements at the same sites back to well beyond that date. Those predictions don't come true. Also there is no genetic bottleneck dating back to that time, as would be required by the entire world ecology being saved on a boat. The number of alleles at many loci in the human genome is far too high for example to have come from 8 individuals that recently. That evidence alone falsifies any literal interpretation of the Noah story.
And blind faith is folly.
Agreed.
One can make predictions; but, whether the predictions are of any use is quite another thing. The rest of your dialogue begs whether there is enough "time" nothing more. There is no time problem. There is only an unwillingness to accept facts on the evo side. A population of 8 can do a lot of damage in a short period of time. Any actual problems, or just handwringing?
Actually from only 5. Noah and his wife, and their daughters in law.