what subscribers say

“Razib Khan’s two part essay on Indian history is brilliant. While it’s long for a blog post, you’ll learn more about India than you would in many full length books.”

-Scott Sumner, Ph.D.

“Bro, I’m really digging your newsletter!”

-Carlos D. Bustamante, Ph.D., MacArthur Genius

Razib Khan offers recommended reading. I promise you that at the margin spending time on his links is worth more than spending time on Twitter. I’m talking to you, Tyler [Cowen].

-Arnold Kling, Ph.D.

thank you for sharing this Steppe history. It’s absolutely riveting and so fascinating. I’ve re-read David Reich’s book which, thanks to your Substack and podcasts, has become a much less impenetrable read

-reader R.

I too have been [sic] haunted by the steppe... But I grew up in an ancient small town in India filled with temples and a sense of "glorious in the past but a dump today". I read too much. I too was writing my own steppe thesis in college. But I gave up because evolutionary biology got hold of me. I now sit by your feet like they say in Upanishad, and yearn to go back to my old times.

-reader A.

Here’s what Freddie deBoer, author of The Cult of Smart, says:

Subscribe for full access to premium deep-dive posts, archives, comments and first access to a weekly podcast with thoughtful guests from a wide range of domains.

What you will find:

  • premium deep-dive explorations of subjects like echoes of ancient Rome in Italian genetics today, Romani genetics and survival against the odds, Indian genetics, as well as a long-term project delving into the mysteries of steppe conquerors and civilizations especially as told through our genes today. These (and their discussion threads) will appear only behind the paywall.

  • an Unsupervised Learning guest-driven podcast episode weekly. These remain gated, for subscribers only, for two weeks, after which you’ll find them free on your favorite podcast platforms.

  • For what it’s worth, I still post regular, more off-the-cuff content at my long-time blog Gene Expression gnxp.com. Which, with 19 years of archives, always has been, and remains free.

Why I hope you’ll join me

In an age of tip-toeing around corporate media sponsors, risk-averse editors and craven group-think, Unsupervised Learning is one more little island of open discussion, difficult but important conversations, deeper reflection, the odd dangerous idea and of course, unsupervised (and rigorously uncensored) learning. You literally will often hear it here first.


Razib Khan
Geneticist. Also history, evolution, politics, books, etc.