The Finite Universe and Finite Time: Intuition, Not Physical Law

A finite space doesn't require a boundary, and the Big Bang doesn't prove time ends: the intuition of a finite universe is not a physical law.

English · Original discussion in Spanish · Published

The Finite Universe and Finite Time: Intuition, Not Physical Law
A Finite Universe Physics Doesn't Support

The universe is finite. So is time. The phrase repeats as if it were a law, when in fact it is merely a hunch: nothing about the geometry of the cosmos can be deduced from 'that which begins must end.' This is the crux of an argument that starts abruptly and, a few paragraphs later, becomes much more nuanced.

Why a Finite Space Doesn't Require Boundaries

The most challenged argument—that if space is finite, matter will eventually collide with its limit—runs up against an elementary object: a sphere. A spherical surface is finite and has no boundary to collide with. There is no physical law that mandates a finite volume must have a frontier. And if this holds for space, there is no reason to assume it regarding time.

Time: From the Big Bang to the Great Reset

The Big Bang describes an origin, not an end. Some take the reasoning to the extreme of imagining the cosmos as a plane whose edges matter has not yet reached: the day it does, heat would retract space and drag time back to its starting point. Not a Big Crunch, but a reset. Cyclic models of expansion and contraction exist on paper. Proven? None.

Black Holes, Entropy, and the Creator's Bill

The uncomfortable piece remains the Planck scale: below it, physics ceases to be reliable, and speaking of a 'before' the Big Bang loses meaning. From this divide arise two opposing currents. One holds that matter and time are finite, and an unlimited creator explains what the purely materialistic reading cannot close. The opposing view argues that this converts a human intuition into cosmology; and in the latter, black holes are described as 'large-scale matter destructors,' a mechanism that, according to that view, would prevent the universe from cooling.

If cyclic models eventually gain observational support, the thesis of finite time will collapse on its own. If they do not, it will remain standing by custom. And no matter how often it is repeated, it will continue to be no law.

Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (17 replies).

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