"Everything in this empirical world is lawful. Nothing happens without a cause. But at the Quantum level, that is not so. A single quantum jump is unpredictable. It's not caused by anything we know. A particle may jump into another state or it may not. If it needs a photon, it can interact with a photon or not. Those are the only examples of not lawful processes. They only occur at the boundary of the non empirical world and empirical world." Dr. Lothar Schafer