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By Philosopher Michael Alan Prestwood

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Adam: Haplogroup A

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By Michael Alan Prestwood

Sun 11 Jul 2021
Published 5 years ago.
Updated 5 months ago.
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Imagined image: Homo sapien couple, circa 275,000 years ago. Even as early as this, humans all over Africa, the Middle East, Europe, and Asia essentially looked like we look now.

Adam: Haplogroup A

275,000 BCE
11,000 Generations Ago

All humans today share a single grandpa, circa 275,000 BCE. We know this because all humans alive today share our ancestor’s haplogroup A genes — from our Y chromosome. He was one of many thousands of men living in eastern Africa. Many paternal lines survived for many generations but ultimately over time all the other male lineages died out. Adam’s descendants met our Eve about 100,000 years later–about 4,000 generations later.

Haplogroup A, screenshot from 23andme.com

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Michael Alan Prestwood
Author & Natural Philosopher
Prestwood writes on science-first philosophy, with particular attention to the convergence of disciplines. Drawing on his TST Framework, his work emphasizes rational inquiry grounded in empirical observation while engaging questions at the edges of established knowledge. With TouchstoneTruth positioned as a living touchstone, this work aims to contribute reliable, evolving analysis in an emerging AI era where the credibility of information is increasingly contested.
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Column Research….
1. Timeline Story
The Great Quaker Debates!
2. Linked Quote
“All men are prone to differ. It is no new thing in all former ages, in all parts. Each party is most right in his own eyes.”
3. Science FAQ »
Do facts actually change minds?
4. Philosophy FAQ »
When does persuasion become manipulation?
5. Critical Thinking FAQ »
How can you tell when a debate has stopped being productive?
6. History FAQ!
What is the history of debate?
Bonus Deep-Dive Article
Roger Williams Biography and Dedication to the Freedom of Conscience

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