Most people with European ancestry are 10th or 11th cousins to each other based upon how every US president is related to every other. This includes the current President who is half Eoropean.
> Most people with European ancestry are 10th or 11th cousins to each other based upon how every US president is related to every other.
"The people who have been elected President of the United States" are not a representative sample of "people currently alive with European ancestry" (or even a nonrepresentative subset of that set) such that generalizations about relations between members of the latter class could be drawn from the relations between members of the former class.
And even if they were, strong conclusions can't really be drawn from an N=44 sample.
2 ^ 11 = 2048 great ... grandparents. However, the top row only counts as one set. Thus, at most 1,024 couples. 10 generations down with 3 kids a generation is 59,049. Assuming zero deaths and zero intermingling that's 60,466,176.
So, your going to need very large family sizes for that to work out once you account for deaths without children or intermingling. France averaged 4.5 kids a couple in 1800 so I don't think this math works.
Its not math, but exhaustive geneologies by experts who've tracked every US President as far back as Saxon England. These emperical results constrain theoretical calculations.
Your assuming US Presidents are a representative sample. That seems highly dubious. I mean one is the child of another. More importantly 11th century is much more than 11 generations back. Go to 20 generations and include people at different generations then sure.
