Let's say someone wanted to describe the motion of a 3D object in 3D space, for example maybe a ball in real space. Instead treating the ball as a 3D entity as a whole, how about just taking any point on the ball 1d point and just describe it's motion. In my example I'm assuming the point I chosen on the 3D sphere moves with it. This would simplify the problem from a 3D problem in 3D space into a 1D problem in 3D space. I would like to make a new kind of basic reformulation of classical mechanics similar to what Lagrange did in which 3D object can be expressed as 1D points for continuous bodies. Would this idea be original or was it came up with already .