וידבר אלהים אל משה ויאמר אליו אני יהוה
וארא אל אברהם אל יצחק ואל יעקב באל שדי ושמי יהוה לא נודעתי להם
And God spoke unto Moses, and said unto him: 'I am the Lord; and I appeared unto Abraham, unto Isaac, and unto Jacob, as God Almighty, but by My name hwhy I made Me not known to them.
How can HaShem reveal his Name, his Nature, in this world? HaShem is One. He is beyond time. The features of the physical world are utterly opposite. The world is complex beyond measure and subject to the flow of time. The Universe seems independent, ruled by and only by the laws of Nature. The Universe does not seem to need a Divine power. It does not even seem to leave room for Him.
HaShem is One – what does it mean? Here is how the Universe reveals what it seems to hide.
Quantum Mechanics establishes that a physical system can be in what is called a pure state. A pure state is timeless: At all times the pure-state system is completely characterized by its properties at any particular time. In scientific jargon, time evolution of a pure-state system is “unitary.” Examples of pure-state systems are elementary particles such as electrons, protons, or neutrons, or atoms in their ground states.
In principle, pure-state systems can be of any size, and can consist of any number of particles. Even if consisting of many particles, the pure-state system must be treated as “one” in order to describe its unitary evolution. Unitary evolution will generally not apply to its subsystems in isolation, as each subsystem will be “quantum-entangled” into the rest of the pure-state system. Subsystems cannot be completely understood by themselves.
This is the lesson: The physical Universe is but a subsystem (not in a spatial sense, obviously) of the whole of reality. It cannot be fully understood in isolation. It is “quantum-entangled” into the higher worlds. The total of reality is One. Ein Od Milvado. There is definite Hanhaga. The future is certain. The chaos is illusionary.
לט
