Imagine you are on a road, in a convertible car that is REALLY fast. There you are, zooming along at over a hundred miles an hour, the wind in your hair, and the bugs in your teeth. (Well, hopefully no bugs…) Now, you see a speed limit sign up ahead. It says MAXIMUM SPEED is 500kph. Your car is capable, you think, of going faster than that. So, you push down the accelerator, and the engine whines and suddenly you run out of fuel. You coast into a gas station; fill her up, and take off again, determined to hit 500kph. Leaning hard on that pedal, you approach that limit and suddenly, the engine winds down.
Y = 4
C = 4