So, what you say is that the precision of the next position is tied to the interval length between two timestamps? The smaller your interval, the more precise you approach reality. Digitally you can calculate this position to an exact precision, from T=0 to T=1, but with an analogue timelapse you can go to infinitely small intervals, T=0 to T=0.000..01, and since infinitely small is not reachable, you never know precisely where you end up. Makes sense.