swamidass
June 10, 2018, 6:35pm
5
scd:
according to evolution human population pass the 1 billion limit only in the last hundreds years (from the last 2-3 my years):
(image from Human overpopulation - Wikipedia)
the data fit naturally with a young earth prediction.
That is not correct. As we have shown in other threads, the genetic data is totally in conflict with the YEC account. Selectively presenting evidence is not going to convince people.
Reference this thread with [DOI] , reference the main thread to which this refers with [DOI] .
Do “Humans” arise from a single couple?
It is a deceptively simple question, with a great deal of subtlety. Some claim “no,” with certainty approach that of our certainty that the sun is the center of the solar system: “heliocentric certainty.”
This, however, is a subtle question. Most important to be careful about is the equivocation between genetics and genealogy, which does arise here (see TMRCA vs. TMR4A). More significantly, we find that all “humans” do descend each individually from many single couples (see the Genealogical Adam ). That, however, is a conversation for another day.
Instead, here, I wanted to focus on understanding why scientists are convinced our ancestors arise as a population that never dips down to a single couple. What is the evidence behind that finding? What are its limits? How strong is that case? Most of my work takes this for granted, but it is worth pressing …