1. Get outside your own room.
2. If you have a younger sibling, tell him/her to put a cup/glass inside your room without telling you where it is.
3. When you're in front of your door. Close your eyes.
4. Find the cup/glass.
5. When you touched it, YOU FOUND IT.
But It moved, right?..
So therefore, it changes its "initial" position when you touched it or in other words when you "observed " it. And when you touch the cup, the kinetic energy from your hand transfers to the cup, thats why it moved. Then the cup also pushes your hand (newtons law of action and reaction) thats why you felt it, and thats how you "observed" it.