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?
So, how long ago do you think the entire world ecology was saved on a wooden boat?
A population of 8 can do a lot of damage in a short period of time. Any actual problems, or just handwringing?
Huh? What has that got to do with anything I said?