This reminds me of Jay Leno's "Jay watch", when he was on the street asking people how many dimes there are in a dollar. One bimbo, who claimed to be in the process of getting her teaching certificate, claimed there were 5 dimes in a dollar. Actually, there are 5 dimes in a dollar, two sets of them. There are also 1, 2, 3, 4, 6, 7, 8, 9, and 10 dimes in a dollar.
But I'm a mathematician and that's how I think.
:-)