Gravity

While we are unable to describe the 3-dimensional physics of gravity we are obliged to accept the possibility of a 4th dimension of space in which our familiar 3D referencial is accelerated from the bodies’ centers of mass outwards. That would be the true gravitational acceleration, from which gravity would be a consequence and a manifestation.

This is necessarily a spatial dimension because there is a motion in that dimension, which we cannot perceive merely because our 3D referencial is invariant to it. We are in permanent motion relative to that 4th dimension.

It could also be logical to place other gravitational effects on 3D bodies in that fourth dimension, which would then be the dimension of existence of what we call dark matter.

In fact, when we say that matter distorts space, because we measure it as invariant, we know that this distortion does not affect the geometry of 3D space. Therefore we are in reality stating the existence of a fourth dimension of space. If the shortest path between two points in space is not a line, while we can still follow a 3D measured line, then that curvature only happens in a fourth dimension.

A straight line in a sheet of paper is invariant to distortions of that sheet beause its the whole sheet that is being distorted, making the 2D geometry invariant under any measurement carried in 2 dimensions. Its when we introduce a 3rd dimension that we can distort the plane while maintaining its intrinsic geometry intact. The same applies to the distortion of 3D space from which gravity is an effect. That distortion, translated to 3D measurements (the only ones we can carry out and explain) is an acceleration.

Another way to put this is that classical physics (and simple mathematics) can still explain gravity.