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James King

@jamesking.io
79 followers 133 following 99 posts

Digital product designer from London. Founder at science-practice.com and co-founder at fora.health. Contributor to the Ergodicity Economics research community. jamesking.io

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James King @jamesking.io · 10h
Great idea for making "glanceable" podcasts. Perfect medium for listening to recorded lectures with slides. alexwlchan.net/2026/glancec...
alexwlchan.net
Abusing ID3 chapters to turn videos into glanceable podcasts
Inserting a chapter with artwork every few seconds turns an MP3 file into an approximation of a video file. I can listen to videos as audio-first, and glance at my lock screen if I need some visual co...
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James King @jamesking.io · 15h
Great interview with Tristan Buckmaster about getting scooped by Open AI. www.youtube.com/watch?v=Mzbt...
youtube.com
The Buckmaster Interview (Navier-Stokes) - Numberphile
YouTube video by Numberphile
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Benjamin @benjaminschneider.ch · 24/09/2026
don't ask claude to set an alarm for you
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Oliver Morton, Eater of Sun @eaterofsun.bsky.social · 23/09/2026
bsky.app/profile/eate...
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James King @jamesking.io · 23/09/2026
Thank you, great thread. Is there a place where people in the Yes / Yes camp are convening?
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James King @jamesking.io · 23/09/2026
48 likes… just saying!
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James King @jamesking.io · 18/09/2026
Just updated this to work with the newly launched @observablehq.com.
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James King @jamesking.io · 15/09/2026
New Audiolog episode: Science practices Listen: audiolog.jamesking.io/2026-09-15
audiolog.jamesking.io
Science practices
Clips from Bruno Latour, Michael Lewis, Brian Wynne and Robert Miles.
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James King @jamesking.io · 14/09/2026
Gah, its been a long while since I used them. Thanks for the tip.
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James King @jamesking.io · 14/09/2026
Had success before with www.abebooks.co.uk
abebooks.co.uk
AbeBooks | Shop for Books, Art & Collectibles
Discover a wonderful selection of rare and collectible books, used copies, signed and first editions and more, from booksellers located around the world.
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James King @jamesking.io · 14/09/2026
Yes. But it is important to realise that models are getting larger and deeper to the point that its a legitimate to be concerned about their internal “thoughts” and not just the text they output. Vid explains why really well.
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James King @jamesking.io · 14/09/2026
I find Robert Miles really helpful as a navigator of AI safety issues. This video in particular is good. He acknowledges that we can anthropomorphise LLMs too much, but it is still helpful to think of them as “thinking” rather than just generating language. www.youtube.com/watch?v=iuHd...
youtube.com
The AI Language We Can't Read: Neuralese ft. Rob Miles - Computerphile
YouTube video by Computerphile
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James King @jamesking.io · 12/09/2026
Stop motion animation?! www.youtube.com/watch?v=dtr5...
youtube.com
Wildwood – Official Trailer
YouTube video by LAIKA Studios
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Tom MacWright @macwright.com · 07/09/2026
observable's community is just stacked with talent
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James King @jamesking.io · 08/09/2026
See also: jamesking.io/2026/06/10/h...
jamesking.io
How to think about science
A listening recommendation for learning about science and technology studies.
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James King @jamesking.io · 08/09/2026
New Audiolog episode: Andrew Pickering's philosophy of science Listen: audiolog.jamesking.io/2026-09-08
audiolog.jamesking.io
Andrew Pickering's philosophy of science
David Cayley interviews the philosopher of science, Andrew Pickering.
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James King @jamesking.io · 08/09/2026
This week's London Review of TikToks is particularly good. www.undermanager.com/the-london-r...
undermanager.com
The London Review of TikToks - special complexity edition
I was recently very annoyed by an episode of Past, Present, Future about how short-form video is a Bad Idea. It was lazy and silly and I vowed to make a short form video rebutting it all. (I haven't ...
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James King @jamesking.io · 05/09/2026
It _feels like_ Astra remembered choices it made at lower reasoning levels (assuming those ran first) or Astra just makes more consistent artistic choices when approaching the task from scratch.
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James King @jamesking.io · 05/09/2026
FYI: Link to pelican transcript in your post is missing. Observation: Pelicans for Astra are more consistent in the drawing choices from low->high. Arbitrary details like position of the sun, number of tail-feathers, shape of wing/arm is the same, but for other models no consistency between levels.
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James King @jamesking.io · 03/09/2026
Congrats! Been following your video reports on Audacity’s progress. Great to see it come to fruition.
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Observable @observablehq.com · 01/09/2026
For more than a year, we’ve been quietly building an all-new Observable. Today, that new Observable is live on observablehq.com. Read Mike @ocks.org’s announcement: observablehq.com/@observableh...
A screenshot of the new Observable interface, showing a notebook visualizing “Bollinger bands”. Several interface elements are labeled. Along the top: workspace menu, new notebook button, user menu. Along the right side: file attachments, dependencies, comments, settings, enable tinkering, show AI. In the interior: cell inserter, cell menu, cell toolbar.
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James King @jamesking.io · 19/08/2026
New post: Where to put the emphasis jamesking.io/2026/08/18/emphasis
jamesking.io
Where to put the emphasis
Some links on the importance of emphasis.
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James King @jamesking.io · 18/08/2026
New Audiolog episode: The glitch in The Matrix Listen: audiolog.jamesking.io/2026-08-17
audiolog.jamesking.io
The glitch in The Matrix
Clips from Jeremy Grantham, Robert Miles and Patrick Boyle.
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James King @jamesking.io · 13/08/2026
I like this post by Emilie Rosenlund-Soysal ergodicityeconomics.com/blog/time-sp...
ergodicityeconomics.com
Time, Space, and Climate Damages
Does the way we look at a problem – over time or across an ensemble – change what we see? The main insight from Ergodicity Economics is that when ergodicity is broken, it does. But asking the ergodici...
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Ole Peters @opeters.bsky.social · 11/08/2026
Nick Hanauer on how the ergodicity problem in economics informs his thinking about inequality. youtube.com/shorts/cOhbe...
youtube.com
Monopoly Economy: Why Markets Aren't Ergodic #shorts
YouTube video by Blackbook Protocol
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James King @jamesking.io · 04/08/2026
Oops - I made a small mistake in the gif above - the notebook that I download is new.observablehq.com/@nxrix/binar..., but the one I then open in Observable Desktop is a remix: new.observablehq.com/d/cca8d2013f... which I downloaded earlier.
new.observablehq.com
Binary Black Holes
An Observable notebook by nxrix
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Observable @observablehq.com · 04/08/2026
We’ve been rebuilding the editor atop the foundation of Notebook Kit and portable files in an open format. You can’t necessarily tell yet, since there’s no button… but thanks to James for seeing it! See also @nxrix.bsky.social’s remarkable depicted notebook: new.observablehq.com/@nxrix/binar...
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James King @jamesking.io · 03/08/2026
New post: Simulating geometric Brownian motion jamesking.io/2026/08/03/geometric-b…
jamesking.io
Simulating geometric Brownian motion
Geometric Brownian motion is a frequently used modelling tool in finance and economics (especially [Ergodicity Economics](https://ergodicityeconomics.com/)), but it can be tricky to understand and implement.
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James King @jamesking.io · 03/08/2026
I am sure that @observablehq.com will add this feature soon, but until then… I made a tool that exports Observable Notebooks 2.0 documents from the new Observable site. Useful for editing locally in Observable Desktop. tools.jamesking.io/observable-n...
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Ole Peters @opeters.bsky.social · 29/07/2026
I just checked, and you can get the book for EUR 5.17 at the moment: www.kennys.ie/shop/fortune...
kennys.ie
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Tom Gauld @tomgauld.bsky.social · 29/07/2026
My latest cartoon for @newscientist.com. Inspired by recent news about the SpudCell. NS subscribers can read about it here: www.newscientist.com/article/2532...
Title: The artificial cell's diary 

Panel 1: An oval green cell with a face opens its eyes. 
Caption: Woke up to the scientists discussing whether I was alive or just exhibiting some of the symptoms.

Panel 2: The cell looks thoughtful
Caption: A bit heavy for first thing in the morning.

Panel 3: The cell eats some little dots in the liquid around it.
Caption: Had a swim, then ate some of the molecule soup that I live in. My day is pretty much all soup-based.

Panels 4: The cell looks uncomfortable
Caption: Then I began to feel rather odd.

Panel 5 and 6: the cell hseems to be splitting in two
Caption: But, I saved the big news for last: 

Panel 7: The cell smiles. A new, smaller cell smiles back.
Caption: I made a new friend!
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James King @jamesking.io · 29/07/2026
Poundstone is really good at exposition of mathematical concepts. I really like this description of ergodicity (pic, with alt text included). The book is chock full of efficient explanations like this. Do read the book!
FORTUNE'S FORMULA

Like that other formidable E word, entropy, ergodicity is a term from thermodynamics. Nineteenth-century physicist Ludwig Boltzmann used it to describe atoms. A system is ergodic if the fate of each individual atom over time is representative of a large group of atoms.

That is best introduced with an analogy. Suppose I work in quality control at a dice company. It's my job to make sure the dice are fair. One way to test the fairness of dice is to pick a die off the production line and roll it many, many times. I can tally how often each face lands up (the tallies should be close to equal) and compute an average of the numbers rolled. It should be close to (I+2+3+4+ 5+ 6) / 6, or 3.5.

That's a lot of work for a plastic cube that's going to retail for pennies. Here's a quicker test. I scoop a big basket of dice off the production line and heave them all onto the factory floor at once.

Then I tally and average the results.
The first test involves a time average because I'm looking at an individual die's outcomes over time. The second test uses an ensemble average, for I'm using a group of dice's outcomes at a single moment in time.
Customers care about how the dice they buy will behave over time (and not so much about the other dice they didn't buy). The time average is more directly relevant. But the ensemble average is easier to use when there are truckloads of dice to inspect. It would be nice if the time average and the ensemble average were the same.
Well, there's a word for that, and it's the word you may have just learned: ergodic. Fair dice can be considered ergodic, meaning that time and ensemble averages are the same.
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James King @jamesking.io · 29/07/2026
The book tells the story of the Kelly Criterion, an application of information theory to the domains of gambling and economics. It is enormously entertaining! The contents page gives a flavour: long-running intellectual feuds interwoven with gambling schemes. It would make a great movie.
The contents page of Fortune’s Formula.The contents page of Fortune’s Formula.
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James King @jamesking.io · 29/07/2026
Just finished reading the 20th anniversary edition of Fortune’s Formula by William Poundstone. It is such a good book. The new edition has an extra part, titled Ergodicity, which covers the work of Ole Peters and others.
The cover of William Poundstone’s book, Fortune’s Formula, 20th Anniversary edition.
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Ole Peters @opeters.bsky.social · 25/07/2026
If you’re interested in — I was going to say ergodicity, then I thought ‘decisions theory’, and now I’m settling on — life?, have a look at the 20th anniversary edition of William Poundstone’s classic Fortune’s Formula. It has a brand new part about the rise of ergodicity economics.
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Ole Peters @opeters.bsky.social · 25/07/2026
Interesting exercise: use ergodicity economics to determine the conditions under which the answers are rational.
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James King @jamesking.io · 20/07/2026
New Audiolog episode: St. Petersburg Paradoxing Listen: audiolog.jamesking.io/2026-07-20
audiolog.jamesking.io
St. Petersburg Paradoxing
Clips from Jeremy Grantham, Alexander Altmann, Gary Stevenson, Sam Bankman-Fried and Sam Neil.
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James King @jamesking.io · 15/07/2026
New Audiolog episode: Compressed representations Listen: audiolog.jamesking.io/2026-07-15
audiolog.jamesking.io
Compressed representations
Clips from Grant Sanderson, Money Stuff and The Rest is Entertainment.
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Observable @observablehq.com · 13/07/2026
Here @fil.rezo.net reproduces @climatecasino.net’s chart, using warped gridlines to represent both the absolute temperature and the deviation from the historical mean for each day of the year. new.observablehq.com/@fil/godzill...
A line chart with an x-axis showing days of the year, from start of January to end of December; a left y-axis showing temperature, from 22 to 31 ºC; and a right axis showing deviation, from -3σ to 4σ. An orange line shows the mean, starting the year around 26.3 ºC and peaking in May around 27.8 ºC. Faint blue lines show a huge amount of historical data. A bold red line representing 2026 begins the year below the mean, just below 26 ºC, and continues to present day far above the mean, 29.4 ºC. Gray gridlines get “pinched” in the middle, representing narrower summer deviations, highlighting that the current temperature is almost 3.5σ above the mean.
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James King @jamesking.io · 02/07/2026
At the end, his talk touches on his best video (well, my favourite), which you should definitely watch if you have not already. www.youtube.com/watch?v=ldxF...
youtube.com
How (and why) to take a logarithm of an image
YouTube video by 3Blue1Brown
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James King @jamesking.io · 02/07/2026
Enjoyed Grant Sanderson's Config talk on "Designing Math". Its an overview of his approach to exposition and teaching. www.youtube.com/watch?v=bLSL...
youtube.com
Designing Math ft. Grant Sanderson (3Blue1Brown) I Config 2026
YouTube video by Figma
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James King @jamesking.io · 02/07/2026
This is a speculative video I made in 2010 about the difference between living and non-living things. Inspired by today's news of the SpudCell from Adamala et al., I've upscaled the video to 4K and I'm reposting it to YouTube. www.youtube.com/watch?v=xRoI...
youtube.com
Cellularity
YouTube video by James King
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James King @jamesking.io · 02/07/2026
The ideas were developed in conversation with researchers Cameron Alexander, Natalio Krasnogor, Lee Cronin and Ben Davis, who at the time were building "chemical cells" as part of their artificial-life research.
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James King @jamesking.io · 02/07/2026
At the same time, the work of developing these synthetic cells would be slow and iterative. No single lightning strike would transform inanimate matter into a living organism. So our understanding of life would also be gradual: a scale, not a threshold.
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James King @jamesking.io · 02/07/2026
If we are able to make a living cell from scratch out of simpler building blocks, then we would be able to understand the important transitions between non-living and living matter.
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James King @jamesking.io · 02/07/2026
In it, I imagine a "cellularity scale" – five functional milestones on the path towards developing synthetic living cells. At each step, these synthetic cells become more and more alive, until they can finally be classed as living.
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James King @jamesking.io · 02/07/2026
This is a speculative video I made in 2010 about the difference between living and non-living things. Inspired by today's news of the SpudCell from Adamala et al., I've upscaled the video to 4K and I'm reposting it to YouTube. www.youtube.com/watch?v=xRoI...
youtube.com
Cellularity
YouTube video by James King
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Oliver Morton, Eater of Sun @eaterofsun.bsky.social · 01/07/2026
The @economist.com version of today's #SpudCell story (gift link) www.economist.com/science-and-...
economist.com
Scientists have built a cell from the ground up
What do you call an organism with no evolutionary ancestors? SpudCell, apparently
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James King @jamesking.io · 01/07/2026
www.dwarkesh.com/p/grant-sand...
dwarkesh.com
Grant Sanderson – AI and the future of math
Watch now (94 mins) | Math is where we’ll see superintelligence first. What will it look like?
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James King @jamesking.io · 01/07/2026
The recent Dwarkesh & Grant Sanderson discussion on this is very good. Grant poses three ways that LLMs will help create new maths: 1. mountain building, 2. connecting ideas between fields and 3. raw hustle. The german prof. was doing #2. The other ways are also possible.
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