EatonI will never, ever stop loving Bill Atkinson’s dithering algorithm. If you cut your teeth on Macpaint or Hypercard, you probably recognize it without even realizing it.
There’s a great post for the supernerds in the room that goes into the nature of “dithering” and even explains the algorithmic nudges Atkinson Dithering uses to achieve its distinctive look: https://surma.dev/things/ditherpunk/
These days, dithering is usually encountered as an affectation or an artifact; we’ve got ridiculously high res deep color displays on our *wrists*. Back in the 80s when Atkinson was doing some of his most memorable work, though, it was the cutting edge of image display optimization.
Nate Martin