Really? Dithering is generally only useful with quantized colors, you can't dither something that's already quantized without knowledge of the original, and man

Really? Dithering is generally only useful with quantized colors, you can't dither something that's already quantized without knowledge of the original, and many/most people who want to do quantization also want to do dithering. The algorithms themselves might not be conceptually similar, but for practical purposes they seems very related.