Look at all the mathematical that represent what observe in the real world, every one of them is POSITIVE. The very concept of a 'negative number' is impossible. If you have 0, which is nothing, you can't have less than nothing in the real world. Take the fingers on your hands, count to 10 with them, now take one away one by one until they are all down, you can't have -1 fingers. Negative numbers do not exist, show that I'm wrong, protip; you can't.