Time as a spatial dimension: no proof it passes

Time as a spatial dimension: no proof it passes

What is time? The answer comes quickly and without hesitation: a dimension of space, refined to miccionan one that escapes our perception. This definition sounds elegant until someone points out its trap: if we do not perceive it, how can we sustain claims about it? The knot has persisted for years with neither side yielding.

The premise does not come from a physics department but from someone claiming to write a book and submitting it to public scrutiny. Their thesis is that time is a spatial dimension, like length, width, and depth. If those three do not "pass," they reason, the fourth cannot pass either. We are the ones traversing time, not the reverse: the same scheme applied to a kilometer, which goes nowhere because it is the traveler who moves.

The initial curiosity is almost philological: the quote from Saint Paul opening the discussion mentions four dimensions—height, width, depth, and length—and today "length" (longura) is barely used. The term, they recall, has an accepted meaning referring to an extension of time.

The experiment that failed to prove the arrow of time

The strong argument is empirical, not geometric. According to this approach, experts from various fields were once asked to demonstrate that time passes from past to future; that is, that a temporal arrow exists. The result, again according to this premise, was failure: no one proved such a thing exists or is possible.

An uncomfortable consequence trinc. We continue to believe—insists the author—that time passes, and we believe it without proof. The objection from the other side is always the same: if it were a spatial dimension, it should be measurable with a ruler. The reply comes in units: for this view, a minute is a quarter of a degree within a 360-degree circle, and time and space measurements are interchangeable.

The tesseract: the present with cube faces

Here geometry becomes the central language. The construction is classic: a point generating a line; a line generating a plane; a plane generating a solid. That solid is, in this scheme, a point in time. And by extending itself, it forms a line, a plane, and finally a four-dimensional solid, the tesseract: a cube whose each face is, in turn, another cube.

The interpretation is almost narrative. The central cube would be the present moment; each face, an available option at that instant. Moving to one of those options places the subject back in a central cube with new faces. And since options open in all directions, one can go up or down. Models like these—universes divided into cells like bits—were discussed in the past, according to another participant, with promising results that later fell into oblivion, without explicit dismissal.

The eternal now and repetitive life

Another current in the conversation, defended by a participant, directly denies the problem: time does not exist. What exists is a permanent present where changes occur, and we call the succession of those changes time. Saying time began with the Big Bang would be, from this perspective, absurd: there is no beginning for what does not exist. The present instant today is the same as the origin of the universe.

From this idea derives a circular image of life. If a life is a cycle, like the temporal divisions we use, then everything going to the past will be in the future again. Consciousness, however, only illuminates one point of the journey. The return is not remembered, and from there, it is argued, come those children capable of playing an instrument without having studied it.

Why does time perception change with age?

Subjective perception runs through the entire issue. The example is a fruit fly that, according to the proposer's approximate calculation, lives about ten days: in that period, it must fulfill stages a human covers in a hundred years, so it perceives its life as long as ours. One day for it equals a tenth of its existence.

With this yardstick, the sensation that time accelerates is explained. At birth, the same thing happens as when launching a spinning top: there is maximum acceleration that can only slow down. The nine months of pregnancy concentrate a huge amount of change; childhood maintains a high rhythm that decreases with age. The lingering question—whether time wears out or we consume ourselves—receives a sharp reply: neither. Time does not exhaust; what reaches its limit is the temporal extension of each life.

How long is a minute and from when is it counted?

Measurement settles nothing either. Humans need to situate themselves in time as in space, hence they create units. As exposed in the thread, a minute is a quarter of a degree, and a circle has 360 degrees. Since time is space, measurements would be interchangeable: the distance between two cities is 100 kilometers or one hour, depending on convenience.

The underlying problem is the lack of an origin. Counting time is like asking how many turns a wheel has made since it was manufactured: without a verifiable starting point, the calculation is arbitrary. That absence of zero, more than any paradox, leaves the question open.

With these pieces on the table, everything remains where it started. No one has measured time with a ruler, no one has proven it passes, and yet we organize our entire life as if it advanced in a single direction. The day someone points out the origin, perhaps it will cease to be a belief.