Each level of education has its place, indeed.

Transposed SSN?

Don't American SSNs have checkdigits to make sure this sort of thing doesn't happen?

The way my Canadian SIN does?

This Canadian agrees.

I believe it was Robert Heinlein who proposed a voting system where the potential voter was first presented with a question to answer, or a quadratic equation to solve. Only if the answer was correct was the ballot revealed.

Variations on his own theme included paying a set amount of gold, to be refunded if the answer is correct. His most extreme version had the curtains of the polling booth automatically open to reveal an empty box if the answer was wrong.