If you can observe it, you can measure it.
If you can measure it, you can predict it.
If you can predict it, you can control it.
If you can control it, you can fix it.
Well, most of the time.
If you can observe it, you can measure it.
If you can measure it, you can predict it.
If you can predict it, you can control it.
If you can control it, you can fix it.
Well, most of the time.