Would That Have Happened If I Didn't Do This

Like in "The Matrix", when the Oracle said to Neo: "what's really going to bake your noodle later on is 'would you have still broken it [the vase] if i hadn't said anything?'."



There's no way of knowing if he had broken the vase.

What bakes my noodles is: what if the Oracle said to Neo: "if you turn around you will break a vase and fullfill Destiny" and Neo did not want to turn around?

Assuming Destiny and Oracles do exist would we see Neo involuntarily moving his arm awkwardly and knocking the vase over?

Links
http://en.wikipedia.org/wiki/Physics_engine