If a tree falls in the forest, and no one is around to hear it. Does it make a sound?
Well... i'd say the more logical thinking would be to set up a microphone and a non-audio video-camera by a tree that's about to fall, walk about 20 miles away, wait for the tree to fall, and see if it makes a sound. ^_~
I'd really like to bata test GW2. ^_^