Comment by calibas

I should have been more clear, I'm not responding to Alvy-Ray's article, I was simply adding to the idea that a pixel is not a little square.

If you don't treat a logical pixel like a discrete little square, you can take advantage of subpixel geometry to effectively increase the resolution. It's not the same as antialiasing, even though it can be used for antialiasing.

Arguably, instead of treating pixels as squares, you're treating them as three times as many rectangles, but that should still contradict the mental model of pixels as little squares.