structural illiteracy

apartment entrance, southwest CalgaryAnyone, no matter how little formal schooling they have, realises that the equation 2 + 2 = 5.37 does not look right.  Yes, we were taught, but taught so young that simple arithmetic becomes common sense. 

Could we not teach basic visual literacy, also at a young age, so that when anyone sees the picture above (never mind the people who originally drew it up, bought the materials and built it), common sense would tell them that this simply cannot be right?