Forces

Question: Why is it that for every force exerted, there will be an equal opposing reaction force?

Similarly, in the world of electromagnetism, of charges, Len's law state that for a changing magnetic field, there will be an opposing induced current created to oppose this incoming changing magnetic field.

Why is this so?

Is the answer a very simple one, cos I have to admit I'm a real idiot sometimes....

And ya, the force that star wars keeps talking about, "may the force be with you etc etc... " i believe is the electromagnetic waves....

And every thought carries a frequency.... so when a massive group of people get together and think the same thought, somehow the signal gets strong enough to really induce the occurence of the event.....