If there is no one there to hear it, the tree does not make a sound. It may not even fall....

Quantum physics really does give me goosebumps. In the article referenced below, physicists have run experiments that show that reality does not exist if we are not observing it. This leads me to conclude that the answer to that old question: If a tree falls in the forest and there is nobody there to hear it, does it make a sound? is: Not only does it not make a sound, I'm doubtful it actually fell in the first place. Maybe it just manifested into a fallen state?  ;)



Quantum physics says goodbye to reality (April 2007) - News - PhysicsWeb

They found that, just as in the realizations of Bell's thought experiment, Leggett's inequality is violated – thus stressing the quantum-mechanical assertion that reality does not exist when we're not observing it.