David Koelle

What’s next? Billiards are toy models for near-collision dynamics in the 3-body problem. If billiards can compute, undecidability should be hiding in celestial mechanics. In 2026 we plan to address this for the 3-body problem with A. Gonzalez, D. Peralta #wisemen @crmatematica.bsky.social @upc.edu

I’ve seen this called Moravec’s Paradox, although Joanna states it more poetically. en.wikipedia.org/wiki/Moravec...

ALIFE 2025's proceedings are officially published (open-access) on the MIT Press's website!
direct.mit.edu/isal/isal202...

Oh I love this!

I appreciate the 26:16, 2266, 2:26 in your stats!

It’s a beautiful book in print but I’ve also seen legitimate PDFs of the book. The physical copy may no longer be in print.

Some oldies but goodies here:

Out of Control (Kevin Kelly)

Artificial Life (Stephen Levy; the book that started it all for me)

Turtles, Termites, and Traffic Jams (Resnick)

Thinking in Systems (Meadows)

The Algorithmic Beauty of Plants (Lindenmayer)

How Life Works (a new book! Philip Ball)

I was excited to play it as soon as i saw your post. Super smooth! Nicely done.

I found the new Brick Sloped 4x4 in trans light blue in the new Mineral Collection set, see:

www.brothers-brick.com/2025/09/03/l...

These are awesome!

Hi I'm Lara, an italian illustrator and concept artist ❤︎ I'm new here and I would love to share with you some of my works!✨

Oh, where Been Stein’s character was explaining the Smoot-Hawley Tariff Act from the 1930s that didn’t work and is thought to have worsened the Great Depression? Why would that ever be relevant today?

I don’t get it. Is this a communication issue? What is the gap that results in an end to funding a revolutionary medicinal approach?

The same Gary Larson as The Far Side?

The plants are very similar. They both have five-pointed flowers and form berries. If you didn’t know it was a potato plant, you could mistake it for nightshade or tomato just looking at the flowers and fruit. But i always wondered where the tubers came from - thanks for this link!

@naztronomy.com Thanks for letting me see the moon through your telescope at last night’s Astronomy Night!

Jaw-Dropping Video Shows NASA’s Plan to Deliver a Helicopter Swarm to Mars Without Landing The helicopters will scout the Martian surface to help prepare for a human landing on the Red Planet.

Multi-agent systems — ON MARS!

Joint Skyfall mission proposal by AeroVironment and JPL.

This is absurd.

The red supergiant Betelgeuse is the bright feature in this image.

But that darker blue splotch is a *companion star* that's just been discovered—and it orbits so close to Betelgeuse that it's inside the larger star's outer atmosphere.

I’m hoping for a gift with purchase for Soundwave… such as a package of another cassette or two (Rumble + Ratbat?)… but nothing yet!

I believe the person who breaks it down is responsible for making sure all pieces are separate and that the ends aren’t damaged in the process, and starting the puzzle again requires a few shakes of the box first.

Unscientific data, but...
- Made the same post on X and Bsky asking about an obscure System Dynamics book.
X (887 followers): 25 views, 0 likes, 0 comments
Bsky (93 followers): ? views but 2 awesome and relevant new followers who I also followed back, and several useful comments

To my Systems Thinking people: Have you ever come across the book, "Systemantics: How Systems Work and Especially How They Fail"? Is it worth reading? Has it ever been in reprint since 1977?

New paper: "Large Language Models and Emergence: A Complex Systems Perspective" (D. Krakauer, J. Krakauer, M. Mitchell).

We look at claims of "emergent capabilities" & "emergent intelligence" in LLMs from the perspective of what emergence means in complexity science.

arxiv.org/pdf/2506.11135

I’m guessing that you and I both had the same wrong pioneer for 11D, made more difficult because 18A works both ways.

Everyone who makes innovative hardware or software to work with #midi is invited to submit their projects/products (both commercial and non-) to the 2025 MIDI Innovation Awards: midi.org/innovation-awards

This year we introduce a new award category for best MIDI 2.0 project!

This is awesome news! Thanks for sharing!

Horn Stacked 45 deg. with Axle Connectors (2142)! I was trying to figure out that piece on the first branch from the trunk of the Japanese maple. Looks like a similar piece appears just above the third branch from the trunk. Thanks!!

@greyoctagon.bsky.social
Hello! I saw your post on Facebook (I visit from time to time but don't actually post there anymore) - congrats on your professional shift! And as you do the NYT crossword daily, someday you may see MY name in a byline!

YouTube video by Boba Fett Fan Club "Flying with the Fetts" LEGO UCS Jango Fett's Firespray-Class Starship (75409) Promo

Lego nails it with this vintage-style ad for the new 75409 Jango Fett's Starship youtube.com/shorts/f-vAK...

So THAT’S why the word “MENSA” showed up two days in a row in the NYTXW recently!