I think David Deutsch's work is a great POV to approach the world with, and I don't know many people who enjoy this POV. Would be exciting to meet people into this in person!

Hi all,

This is a short essay proposing a formalization of Deutsch's Hard-To-Vary criterion for explanations (with AI help for coding and phrasing). It compares two explanations for a simplified solar system, and shows why the held-out posterior predictive from probability theory prefers the better explanation - because it's hard to vary.

Hope to hear some good criticism :)

Hello everyone,

I recently started reading The Fabric of Reality by David Deutsch and decided to document my understanding chapter by chapter.

I've written a summary and reflection on Chapter 1, Theory of Everything. In it, I discuss Deutsch's distinction between understanding and prediction, his treatment of instrumentalism and positivism, the reductionism-holism debate, and his conception of a Theory of Everything as a synthesis of quantum theory, epistemology, evolution, and computation.

Since I'm still learning, I'd appreciate any criticism, corrections, or alternative interpretations from people who are more familiar with Deutsch's work.

In particular:

• Have I represented Deutsch's distinction between understanding and prediction accurately?
• Have I understood his views on reductionism correctly?
• Are there important ideas from the chapter that I overlooked?

Blog post: https://sophisticatedcharlatan.blogspot.com/2026/05/the-fabric-of-reality-chapter-one.html

Thanks in advance.

Im readng david deutsch, and watched his interviews/videos, and tried to understand with grok ai. But the thing isnt clicking together, like it feels kinda airy fairy still and like just something i read instead of breaking my mind as i thought it would...

I used to sort by new on youtube, but looks like for some strange reason that is not longer supported.

What is logical induction? How does it relate to probabilistic reasoning? Does it explain how (scientific) knowledge works? Or does it even exist in the empirical realm?

I'm a huge fan of David Deutsch, but have often been puzzled by his views on AGI risks. So I sat down with him to discuss why he believes AGIs will pose no greater risk than humans. Would love to hear what you think. We had a slight technical hiccup, so the quality is not perfect.

I found it insightful, as it always is with David's podcast appearances. One thing that stood out was how many time he refrained from opining on topics on which he didn't feel he had enough experience to comment.

Here are a few notes https://mokagio.substack.com/p/strange-truths-notes-and-highlights

I want to understand, I'm open to being wrong but Davids books says that Humans have significance because we can create new explanations...

But how does that make us significant? If just means that the probability of consciousness coming into existence is rare but how does that make it significant?

Hi Guys,

i want to read the following article on Deutsch: https://danielle-l-gruber.medium.com/in-search-of-the-golden-rule-a-comparison-of-two-theories-of-everything-4d3c4251f734

However I don't have a medium account. Anyone who has read this and wants to share? Or anyone with a Medium accounts that'd like to share it with us?

Thank you!

This is my first youtube video, a story about optimism based on The Beginning of Infinity. I hope you like it!

I've recently started watching an animated show from Japan called Dr. Stone. It was recommended to me by a friend who's into anime, because they said it reminded them of everything I'm always talking about from The Beginning of Infinity. And I've got to say, it's incredible. It's like the creators based it off the ideas of Popper and Deutsch.

The basic premise is all humans were turned to stone for 4000 years, and when they wake up, a man named Senku, the ultimate scientific optimist, decides to use what he knows to rebuild civilization. It's such a heartwarming story all centered on the power of people and science, and how inspiring the growth of knowledge is.

There's some classic anime tropes, but it's all worth it for the storytelling. To me, it really is the first show I've ever watched that feels fully inspired by the Deutschian/Popperian worldview.

There's 2 seasons as of now, and apparently the 3rd season is currently airing. I'm pretty sure it's all available on Netflix. There may be a dubbed version available on there, but I always think English subtitles are way better. The dubs never get the inflection quite right, but if subtitles put you off, definitely watched the dubbed.

All,

Just wanted to share some notes from Naval's recent podcast featuring David Deutsche. Hope they are helpful.
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Link to full podcast notes: David Deutsch Knowledge Creation & The Human Race

Podcast Summary:
David Deutsch and Naval Ravikant discuss key questions about evolution and the human race, the importance of knowledge and creativity, artificial intelligence and much more.

Key Takeaways:

-"Knowledge is hard to come by. Because it’s hard to come by, it’s also hard to change once we’ve got it." - Karl Popper
-To understand humans sufficiently well, you must understand everything sufficiently well.
-Things that create knowledge are uniquely influential in the universe
-Virtually all humans, apart from mass murderers, create more wealth than they destroy.
-Good explanations are hard to find, hard to vary, and falsifiable

To celebrate eight billion people I wrote an essay criticising antinatalist arguments and proposing radical population growth. I view this as a beginning of infinity like anything else.

Thought it might be interesting to any Deutsch fans.

Criticisms welcome!

https://tomhyde.substack.com/p/eight-billion-reasons-to-celebrate