Can you help me out and tell me if I am right or wrong when I say the following:

Think of a free fall.

As we see something in a free fall here on Earth we are really seeing it in 2d not 3d. An object that moves in a straight line from one point to another is traveling/falling in 2d. Space/distance is increasing all the time between the object falling and its starting point. An object that falls in 3d must be falling “in”, or “out”. If something falls “in” it falls into one point from all directions. Space is increasing from all directions. If something falls “out” it is falling outwards from one point in all directions.

Please comment

Best regards

Halli