The next thing to throw in the garbage bin is 3 dimensional space. (x,y,z axis) instead using coordinates on the plains depending on number of dimension working on. (3 dimensional= 3 plains length, width position)
Einsteins theory of 4th dimension being time is bogus and can be disproved by anyone.
Shining a light perpendicular to a line shows a dot, has no length, width, height, 0.
Shining a light perpendicular to a square shows a line, one dimension less (line is one dimensional as it has length).
Shining a light perpendicular to a a cube shows a square, one lower dimension.
Shining a light perpendicular to a tesseract shows a cube, again and again it will show one less dimension at no time will it show you the time.
There is an infinitive number of dimensions consequently how straight, flat something is dependents on the resolution, dimensions used. (like computer game character)
Unfortunately our senses have limits, hz, fps, color....and the 3 dimensions.
Now lets move on to the Max Igan flight some time ago form Santiago to Sydney and the compass readings.
https://www.youtube.com/watch?v=DEYcOwOFZHEZoom in
https://imgur.com/Hgmvp62
follow on from this post
https://bt.irlbtc.com/view/1009045.msg48067733#msg48067733