There's 3 toddlers on the floor. You ask them a hard mathematical question. One of the toddlers plays around pieces of paper on the ground and happens to raise one that has the right answer written on it.

- This kid is a genius! - you yell

- But wait, the kid has just picked an answer from the ground, it didn't actually come up...

- But the other toddlers could do it also but didn't!