Rene Decartes

Rene Decartes was lying in his room at the age of six when he noticed a fly above him. He realized that by using the indentations of his wooden ceiling, he could describe the location of the fly to his mother, (who was downstairs), without ever having to ask her to look at the fly. This method of describing things locations became known as the Cartesian Plane and is still used today as one of math's most fundamental ideas.