20 Jan 26
One of the questions of the 2026 acx prediction contest is whether Nvidia’s stock price will close below $100 on any day in 2026. At the time of writing, it trades at $184 and a bit, so going down to $100 would be a near halving of the stock value of the highest valued company in the world.
It’s an interesting question, and it’s worth spending some time on it.
Elise Schuenke comics about Sage, an exhausted hard working autistic, home from a long day of work, masking and social effort. Decompressing and pulling back from the effort to perform, we get to see a 5 pager comic of their partners reactions. A wonderful comic that highlights and gives a moment for a powerfully intimate moment that’s easy to misunderstand.
19 Jan 26
via: https://nebula.tv/videos/notdavid-are-men-actually-lying-about-heights-on-dating-apps/
The article considers structuralism as a philosophy of mathematics, as based on the commonly accepted explicit mathematical concept of a structure. Such a structure consists of a set with specified functions and relations satisfying specified axioms, which describe the type of the structure. Examples of such structures such as groups and spaces, are described. The viewpoint is now dominant in organizing much of mathematics, but does not cover all mathematics, in particular most applications. It does not explain why certain structures are dominant, not why the same mathematical structure can have so many different and protean realizations. ‘structure’ is just one part of the full situation, which must somehow connect the ideal structures with their varied examples.
Very nice philosophy paper by one of the progenitors of category theory on structure. The idea to show a correspondence between Bourbaki and category theory seems like a nice grad school project.
In mathematics, the lattice of subgroups of a group G is the lattice whose elements are the subgroups of G, with the partial ordering being set inclusion. In this lattice, the join of two subgroups is the subgroup generated by their union, and the meet of two subgroups is their intersection.
via: https://doi.org/10.1093/philmat/4.2.174
Talk from the Roguelike Celebration 2018
Very nice software architecture talk. Patterns discussed: composition over inheritance, type objects, commands/actions.
At some point in the 20th century, we filled out the last few basis vectors of humanity. We explored the whole game map. This is what it means to live at the end of history: every aesthetic movement, political and economic system you can imagine can be understood as a linear combination of things that have come before. Asking for a new aesthetics is like asking for a new continent, one north of 90° and with imaginary longitude.
Formats over apps.
Holy shit, have I been sleeping on the AT Protocol. This shit is interesting as hell!
Exclusive: Some scientists say many detections are most likely error, with one high-profile study called a ‘joke’
Seems like we don’t know what we’re doing on the microplastics front.
Very interesting browser prototype.
When someone says something like “The us paid $1.1 trillion for its 2003 invasion of Iraq,” you can think to yourself, “Okay, that’s like a paying for the repairs of a global 100-year natural disaster in the PC age.”
Banger after banger. Jesus Christ.
Another volumetric display! This one does away with the wildly spinning arrays of LEDs, instead using projection mapping onto a point cloud etched inside a block of glass.
It runs DOOM.
How we handle 92 million compilations a year without everything catching fire
Science is done by people for people. We should structure our work to give the people what they want and frame it in a way they can understand.
Everyone should have a slide rule in their kitchen drawers. I’m honestly surprised it is not standard equipment. Once set up, it’s a mess-free, multitasking-friendly way to achieve instant calculations with almost no work.
Meadow Elementary Science Fair 2023 Bronze Medal!
18 Jan 26
The Pauli matrices are used to study the angular momentum of spin-1/2 particles. I won’t merely tell you what they are: I’ll work them out from scratch, and in the process we’ll learn a bit about what ‘observables’ are in quantum physics.
The physics and math of spin-1/2 particles: how states of a spin-1/2 correspond to points on a sphere.