Are Time and Space Really the Background of the World?

We live within time and space every day, so we rarely stop to ask what time and space actually are.

We wake in the morning and sleep at night, and say that a day has passed. Someone walks from one side of a room to the other, and we say that they have crossed a certain distance. Time and space seem so immediate that they appear to be a self-evident background. Modern physics, however, tells us that they are not so simple. Relativity shows that descriptions of temporal intervals, spatial distances and simultaneity can change with physical conditions and frames of reference. At that point, a gap seems to open between everyday intuition and modern physics.

Sustenesis does not begin by asking what time and space are. It first turns to a more basic level — states and differences themselves. The world is always changing. Some relations persist and others do not. Constraints make certain changes stable, comparable and repeatable. Time and space become intelligible through these relations.

We experience time as passing because we compare different changes. We use the recurrence of day and night to measure ageing, the ticking of a clock to measure waiting, and shared schedules to judge when someone should return. We may think that we directly experience time itself, but what we encounter first is a comparison among changes and the continuing relations that those comparisons form under particular conditions.

Space can be understood in the same way. We first encounter the difference between here and there, and only then develop distance, direction and coordinates. Space need not be treated only as a vast container already waiting for things to occupy it. It can also be understood as a set of positional differences that become sustainably comparable and measurable under constraints.

At the scale of ordinary life, these relations are highly stable, so we naturally treat time and space as absolute and unchanging backgrounds. This is also why classical physics works so well in the everyday world. When velocity, gravity or the conditions of reference change sufficiently, however, those relations no longer retain the same simple form. This is where the spacetime structure described by relativity appears.

The movement from everyday experience to classical physics and then to relativity need not therefore be an unbridgeable break. Each can be understood as a particular expression of relational structure under different constraints. Sustenesis does not seek to replace physics or to derive relativity directly from philosophical concepts. It offers a more general perspective from which the continuity among these different descriptions becomes easier to see.

From this perspective, time is no longer merely something mysterious that flows, and space is no longer simply an empty box containing everything. They look more like stable structures formed when states, differences and relations operate under particular constraints. We usually say that we live in time and space. From another angle, we may say that we live within relations that keep changing while sustaining a degree of coherence.

This article is only an entry point. The formal paper on the Sustenesis website presents the definitions, argument and limits of the account more rigorously.

Formal Sustenesis paper: https://sustenesis.com/time-space-state-domain