This thread is to discuss the recent sole-genealogical progenitor Adam. This includes models put forward by @jongarvey, @anon46279830, and @swamidass.
The third story is the most surprising, and it is about sole-genealogical progenitorship (discussion). As recently as 6,000 years ago, Adam and Eve could have been created de novo, in the Middle East, ancestors of us all. Their offspring, however, would have interbred extensively with those outside the The Garden. This is The Genealogical Adam we have been putting forward for over a year now.
The Three Stories are discussed separately on these threads: