For example, for miniature visual displays, color would be better than black and white. However, color displays have lower resolution than black and white because it takes a mixture of three primary colors to produce a single pixel. Dave Post, a specialist in visual perception, wondered if he could use a subtractive method rather than an additive method, to get the same resolution as black and white.
Imtersting what that means and how it works. LCD? Should look up.
