[kiryandil]

You were confused by parallax.

[ought-six]

You don’t understand parallax, son. Parallax occurs when there is a change in the sight picture, usually because of a lateral movement of the eye or a movement of the viewing medium that makes the viewed object appear to move, when in fact it does not. Watching you run away required no action on my part (i.e., no change in sight picture): You just beat feet, son.