The Unwritten Law !

There is an unwritten law in this Universe. It cannot be avoided, and always manifests itself at every opportunity. If a man is mixing a quantity of concrete, he will always be a little short of having enough to finish the job. Usually if small amounts are mixed he will be short by a shovel full. If a big job is attempted, he will probably be short by the same ratio as a small job runs short. There will be a figure or ratio that reflects this law as a constant. A learned man would do well to figure this out.