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Paradox: How many ancestors did you have 1,000 years ago?
Posted on 5/6/22 at 1:05 pm
Posted on 5/6/22 at 1:05 pm
Brain teaser: Everyone has 2 biological parents, 4 biological grandparents, and so on. So it corresponds to a formula of x = 2^n, where n is the number of generations back.
So, if you think of a typical generation time as roughly 25 years, then 1000/25 = 40.
So, 2^40 or 10,995,116,277,756.
But according to most estimates, only 250,000,000 or so people were even alive in AD 1000.
So, how do you resolve the paradox?
So, if you think of a typical generation time as roughly 25 years, then 1000/25 = 40.
So, 2^40 or 10,995,116,277,756.
But according to most estimates, only 250,000,000 or so people were even alive in AD 1000.
So, how do you resolve the paradox?
25
Posted on 5/6/22 at 1:06 pm to UndercoverBryologist
All the people that share ancestors. Wow that was tough.
25 years is also really short
25 years is also really short
This post was edited on 5/6/22 at 1:08 pm
Posted on 5/6/22 at 1:06 pm to UndercoverBryologist
I had at least 1, that much I know.
Posted on 5/6/22 at 1:06 pm to UndercoverBryologist
math is ghey
Posted on 5/6/22 at 1:06 pm to UndercoverBryologist
Posted on 5/6/22 at 1:06 pm to UndercoverBryologist
Does this mean I am related to all people?
Posted on 5/6/22 at 1:06 pm to UndercoverBryologist
quote:
So, how do you resolve the paradox?
just drink a bunch then forget about the paradox
Posted on 5/6/22 at 1:08 pm to UndercoverBryologist
This is some oweo level thinking.
Shared ancestry (incestry lol)
Shared ancestry (incestry lol)
Posted on 5/6/22 at 1:08 pm to UndercoverBryologist
quote:
So, how do you resolve the paradox?
cousin sister
Posted on 5/6/22 at 1:17 pm to Chicken
quote:
Does this mean I am related to all people?
Posted on 5/6/22 at 1:18 pm to Chicken
quote:
Does this mean I am related to all people?
Adam, Eve, and even Steve
This post was edited on 5/6/22 at 1:19 pm
Posted on 5/6/22 at 1:24 pm to UndercoverBryologist
The doctor was the mom
Posted on 5/6/22 at 1:27 pm to LNCHBOX
quote:
25 years is also really short
For a familial generation? I’d think 25 is a decent average. You know there are some 36 year old grandmas running around out there.
Posted on 5/6/22 at 1:28 pm to UndercoverBryologist
quote:
So, how do you resolve the paradox?
Shared ancestry. Everyone basically has offspring with someone with shared ancestors which makes your exponential math equation inapplicable.
This post was edited on 5/6/22 at 1:29 pm
Posted on 5/6/22 at 1:29 pm to UndercoverBryologist
If your mom went to LSU, I am probably your dad.
Add that to your count.
Add that to your count.
Posted on 5/6/22 at 1:29 pm to UndercoverBryologist
quote:
So, how do you resolve the paradox?
Im stumped. If only people could have had more than one child throughout history, maybe we'd have an answer.
Posted on 5/6/22 at 1:29 pm to Wayne Campbell
quote:
You know there are some 36 year old grandmas running around out there.
And there's some 36 year old first time mamas too. Goes both ways. 25 just seems a little short to me. I'd go closer to 30. which has an exponential effect on the calculation (obviously
) Posted on 5/6/22 at 1:32 pm to UndercoverBryologist
Inbreeding. Pedigree collapse. The average person has 17,000 6th cousins. If your family has been in an area for a while and so has your spouse there's a good chance you are distantly related. Until the 1950s everyone was married, on average, to their 4th cousin.
Posted on 5/6/22 at 1:34 pm to LNCHBOX
quote:
And there's some 36 year old first time mamas too. Goes both ways. 25 just seems a little short to me. I'd go closer to 30. which has an exponential effect on the calculation (obviously )
This a very anglo-centric viewpoint. Average age of first time mothers in Africa is like 18-19. Not much higher in large parts of Central and South America.
Posted on 5/6/22 at 1:36 pm to elposter
quote:
This a very anglo-centric viewpoint. Average age of first time mothers in Africa is like 18-19. Not much higher in large parts of Central and South America.
You're only looking it it for the age of having the first child for the mom. You have to account for multiple children from the same mom.
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