Did It Begin, or Has It Always Been?

Every creation story answers one question, and so does every physics of the early universe: did it begin, or has it always been? Either there was a first, a step from no-thing to something, or there was never a first and something has simply always been. It looks like a clean either-or. I think it mostly is not, once you split what the question is about. But first, in good faith, each side at its strongest.

The case that it always was

The oldest argument is four words: from nothing, nothing comes. If there were ever truly nothing, no matter, no space, no time, no law, no potential, then there is no engine by which anything could arise, and there would be nothing now. Something is here. So something must always have been, because absolute nothing has no door out of itself. Parmenides said it. Spinoza built a system on a ground that exists by its own nature and therefore cannot fail to be. Leibniz separated the things that could have been otherwise, which need a reason, from whatever exists by necessity, which does not.

Physics is friendlier to this than people assume. The Big Bang is the start of this expansion, not a proven start of existence. The no-boundary model of James Hartle and Stephen Hawking closes the early universe off smoothly, with time curving into space so that there is no first moment to point at, the way there is no point north of the north pole. Cyclic and eternal-inflation models push any beginning back without end.

The case for the miracle

Two hard facts push the other way. The first is entropy. If the universe were infinitely old it should long ago have run down to featureless heat death, or be drowned in random fluctuations. Instead we sit in a strikingly ordered, low-entropy world. Roger Penrose put the improbability of that starting order at one part in ten to the ten to the hundred and twenty-three, a number that makes the early universe look less like the middle of an eternity and more like a finite time after an extraordinarily special start. The second is a theorem. In 2003 Arvind Borde, Alan Guth, and Alexander Vilenkin showed that any universe expanding on average cannot be stretched infinitely into the past but must have a past boundary, and it catches even the eternal-inflation models meant to escape it. Add al-Ghazali's objection from a thousand years ago, that you can never actually finish crossing an infinite, so that if an infinite past had to elapse to reach now, now would never have arrived.

Where the two stop fighting

Now the split. "Always was" and "the miracle" stop contradicting each other the moment you see they are about different aspects.

The eternal is true of the canvas. Whatever is necessary rather than contingent, the ground itself, does not begin, because a necessary thing cannot fail to be, and absolute nothing was never on the table. So "it has always been" is correct, about the ground.

The miracle is true of the manifestation. This ordered, unfolding, low-entropy world, arising from or within that ground, is the event, the differentiation, the "let there be." So "it began" is correct, about the manifest world.

The traditions already hold both without strain. In Kabbalah the Ein Sof is eternal and the tzimtzum begins the world. In Vedanta Brahman is timeless and still there is srishti, the pouring out. The unnameable Tao is eternal and gives birth to the one, then the many. None of them took eternal-ground and origin-of-world to be a contradiction, because they are not answers to the same question. And the deepest version dissolves the fight completely: if time is a feature of the manifest order rather than a container the ground sits in, then "did it begin or has it always been" only means something inside the manifest world. Asked of the ground, it misfires, like asking what is north of the north pole.

What is actually left

So the real result is a cleanup, not a verdict. Most of the old battle was a category error, and splitting the canvas from the manifestation resolves it. What survives the split is one genuine mystery: the arising itself, the step from ground to world, the miracle proper. And it may be worse than open. It may be undecidable in principle, because every observation we could ever make sits inside the manifest order, on the near side of that step, so no measurement can reach across it to see whether there was an absolute first or only a phase in something beginningless. A question can be perfectly meaningful and still be one that no possible evidence could settle. Where that is true, the honest output is not a guess dressed as a finding. It is a clearly marked blank.

Held as options at their honest weight: that absolute nothing was ever the case, very low. That "eternal versus origin" is a false dichotomy resolved by ground-and-manifestation, leaned toward. That the manifest order has a low-entropy boundary that looks like a beginning, well supported. Whether that boundary is the floor of everything or a seam in something eternal, open, and quite possibly past the reach of any evidence.

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Part of The Open Questions, following How the Religions Could All Be Right and resting on Starting From "I Am". The tagged version, with the physics and the sources, is in the Library: The Origin.