Stagger jetting question

Maybe my "lack of knowledge mind" doesn't understand, but on a single 4 bbl sitting on a open plenum intake, I cannot see staggering jet sizes from driver's to passenger side. I've never done it. I guess I don't know anyone that does do it.
I would think just like a lot of carburetors come in with two stages of primary and secondary it's making it more like it has three stages and comes in more gradual and not overloading all at once...?..