Back in elementary school, I believe it was 3rd grade, I overheard two girls discussing mathematics. The conversation basically boiled down to this statement "2 x 2 = 4 and 2 x 3 = 5. Math is soo easy!" Granted we were all young but they should have definitely been old enough to understand the difference between multiplication and addition especially since we had gone over this countless times in class. I remember the 8 year old me just sitting there for several minutes shaking my head in disbelief.