THE answer is, of course, there are NO BLACK DOTS!!!

This illusion is cause by the garphic design taking advantage of our natural blind spots and the fact that the Brain fills in the blind spot with what is "finds" around the "blind spot". Hence the "blind spot" is BLACK here because the surrounding color is BLACK.

jackD

p.s. Extra blind spots from ON(Optic Neuritis) will make for a much more active flipping of spots.

You can verify the all white spots by viewing the screen from a 45 degree angle at a distance of 5 to 6 feet. Look through each eye with the other covered.