To Make a Proof "Foolproof," You Need to Get Rid of a Lot of Fools
You've got to love an essay that has the following paraphrase of Plato's Meno dialog:
Socrates: Here is a square with sides of length 2 and area equal to 4. If we double the area, to 8 units, what will the length of a side be?
Socrates: Here is a square with sides of length 2 and area equal to 4. If we double the area, to 8 units, what will the length of a side be?