The shirt reads: “THREAD COUNT: TOO MANY.”
Below it, a microchip has a bundle of coloured threads running out of it, tangling together and eventually weaving into a small knitted scarf.
Threads in software and threads in fabric, and the illustration runs the two together in a single image. Anyone who has debugged a concurrency problem knows exactly how tangled that bundle gets.
For developers, and for the overlap between people who write concurrent code and people who own a loom.
