One would think that after, oh, say, 125 years or so, the cereal box technology would have changed. Sure, I admit the inner bag containing the Cheerios or Rice Krispies or Count Chocula has evolved so that the once easy-open, waxed paper bags are now some kind of hard-to-open, stab-like-Norman-Bates-proof, synthetic plastic composite bag; but the cereal box itself, that familiar smelling box that is somewhere between paper and cardboard, is still the same after all these years.
"Why is that?" you ask. And I don't rightly know.
Maybe the reason is the connoisseurs of cereal boxes have a hand in the after-market value of such things.