True there is considerable confusion and disagreement out there. Something to remember though is that the eye doesn't see color, the brain does. To say that RGB displays color consistent to how our "brain" perceives the world would be incorrect. In the world we have reflected light which includes the full spectrum of all wavelengths (minus any absorbed by the color). The brain uses all of that signal to realize a specific color. When you look at a monitor you are seeing only three specific projected wavelengths of varying intensity. While the ability to fool the brain with limited sensory stimulation is pretty good, differences exist both in the eye's sensitivity in one or more of the cones between people, and in the ability of the monitor to display consistently from one to another. In particular displaying consistent true yellow in RGB has always been a problem as has the conversion to CMYK. I think it's important to not get hung up on what the primary colors are, but understand the difference between how they're displayed in the physical and digital world. RGB does a great job with presenting more variations, then the human eye can understand, but RBY lends itself better to color theory and the design of harmonious color schemes. As JC mentioned above he keeps it simple with opposites (complimentary) using the RBY color wheel, the opposite of red is pure green (halfway between blue and yellow). Using the RGB modified wheel the opposite of red is more of a sickly turquoise. In the real world I've never seen many red flowers with turquoise leaves.