Heisenberg uncertainty principle and possessiveness.

The observer effect is often conflated with the Hiesenberg uncertainty principle

"In science, the term observer effect refers to changes that the act of observing will make on the phenomenon being observed. For example, for us to "see" an electron, a photon must first interact with it, and this interaction will change the path of that electron. It is also theoretically possible for other, less direct means of measurement to affect the electron; even if the electron is simply put into a position where observing it is possible, without actual observation taking place, it will still (theoretically) alter its position."
(Courtesy: http://en.wikipedia.org/wiki/Observer_effect.)

Exactly, same phenomenon happens when you get a little possessive about anything/anyone. Instantaneously (as early as the laws of physics permit), the object which is being possessive about knows about the obsession and deviates from its original trajectory making it difficult for the obsever. Hence, the only way to guess that the object is on track is to just close the eyes and not make a measurement. May be this is called 'maya' (illusion) in hindu mythology. You can imagine it only with closed eyes, the moment you open your eyes the 'maya' is gone.