His point isn't nonsense to those who have studied genealogy. I've researched my own family lines, and I'm related to over 30 former US Presidents, and I come from a family that has spent most of the past 200 years in poverty on both my paternal and maternal sides. I'm third cousins with James Madison, and 15th cousins with Princes William and Harry of England. I would wager that most natural born US citizens are related to at least a few Presidents regardless of race. There's a website called familysearch.org that has a feature that shows you which famous people you are distantly related to, including Presidents. All you have to do is build your family tree and connect it to the site's master family tree database. (It's run by the Mormons, but free to use for all. I'm not Mormon, but had a good friend who was and he led me to the site)
Sigh. Your point is not valid. Here are some links that try to explain it.
You have two parents, four grandparents, eight great-grandparents, and so on. Each generation back the number of ancestors you have doubles. But this ancestral expansion is not borne back ceaselessly into the past. If it were, your family tree when Charlemagne was Le Grand Fromage would harbor around 137,438,953,472 individuals on it—more people than were alive then, now, or in total. What this means is that pedigrees begin to fold in on themselves a few generations back, and become less arboreal, and more a mesh or weblike. You can be, and in fact are, descended from the same individual many times over.
"But when we get to 40 generations ago, in the time of Charlemagne, we arrive at a trillion ancestors and that is a problem because we now have more ancestors than there were people. Thus one can deduce that a lot of those ancestors must be the same person."
Not a few. I just checked again and i'm related to 37 former Presidents, the Queen of England, Wilt Chamberlain, Ty Cobb, Donald Trump, Abe Lincoln, Obama, Jesse James, and Martin Luther King Jr (but not Joe Biden, thank God!!!).
His point isn't nonsense to those who have studied genealogy. I've researched my own family lines, and I'm related to over 30 former US Presidents, and I come from a family that has spent most of the past 200 years in poverty on both my paternal and maternal sides. I'm third cousins with James Madison, and 15th cousins with Princes William and Harry of England. I would wager that most natural born US citizens are related to at least a few Presidents regardless of race. There's a website called familysearch.org that has a feature that shows you which famous people you are distantly related to, including Presidents. All you have to do is build your family tree and connect it to the site's master family tree database. (It's run by the Mormons, but free to use for all. I'm not Mormon, but had a good friend who was and he led me to the site)
A few presadents is a lot different form every presadent.
My point is valid.
Sigh. Your point is not valid. Here are some links that try to explain it.
https://www.popsci.com/descended-from-royalty/
https://phys.org/news/2013-08-dna-earth.html
Not a few. I just checked again and i'm related to 37 former Presidents, the Queen of England, Wilt Chamberlain, Ty Cobb, Donald Trump, Abe Lincoln, Obama, Jesse James, and Martin Luther King Jr (but not Joe Biden, thank God!!!).