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Showing posts from November, 2026

Loci: a landscape for your notes

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A post on r/secondbrain, Maps organize information through landscapes — why? , stopped me for a minute. It brought back Moonwalking with Einstein , Joshua Foer's year with competitive memorizers, and the old trick at the center of it: put each thing you want to remember in a place, then walk the places. The Romans called the places loci . I have a few thousand notes, clippings and links. I can search them when I remember a word. I cannot walk them. So I built a landscape for them and called it Loci . Here is the idea in twenty notes. I imported twenty short Markdown files with tags and [[wikilinks]] . They became five hills. I clicked one note, and then I orbited the terrain. What a hill is Every note is a point. Notes that mean the same thing sit near each other. Groups of near notes become regions, and each region is a hill. The hill with the most notes is the tallest and the widest. Height is a count, not a judgment. A tall hill means you wrote a lot about that topic, no...

TrackAnything: Click an Object, and a DGX Spark Follows It

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I want to point my Mac camera at a scene, click an object, and see a mask stay on that object while it moves. I do not want to train a model for each object. I also want to run the model on my own hardware, not on a hosted API. Segment Anything models can do this. You select an object one time, with a point, a box or a name. The model then finds the same object in each new frame and marks its pixels. This marked area is the mask. The project is TrackAnything . It runs three trackers (EfficientTAM, SAM 2.1 and SAM 3) on an NVIDIA DGX Spark. The Mac only shows the camera and the result. In this post, I show how the pieces fit together, what the numbers say, and where the method is wrong. Vehicles on a motorway, tracked with EfficientTAM-S. The detector runs again every 15 frames, so new vehicles get a mask. Video: "Motorway A40 - on bridge above the traffic" by Kathinka Engels / Sounds of Changes, CC BY 3.0 , via Wikimedia Commons. Changes: audio removed, trimmed to 10 se...