Wind direction changes constantly, extremely simple concept.
-1 for misappropriation of the word "physics".
wind changing direction won't cause the mill to turn in the direction of the sails, (in this case counterclockwise). See Bernoulli's principle...
http://en.wikipedia.org/wiki/Bernoulli%27s_principle
Doesn't matter which way the wind comes from, the placement of the sails/shutters relative to the sweep indicates that this particular windmill should be rotating clockwise.
You're obviously not qualified to comment on this thread.