Q: If a tree falls in the forest, and no one is there to hear it, does it make a sound?
A: Consider no one. If the tree falls, and no one is there to hear the sound, then the tree will fall on no one.
Next, consider the set of all children unfortunate enough to be named No One. In this set, there is a high probability that for any whole child, (as fractions of children are messy to consider), the child would scream when hit by a tree.
Then, as No One is hit by the tree, it is also highly probable that No One will scream.
Therefore, if a tree falls in the forest, and no one is there to hear it, there is a high probability that a sound is produced, although it is not neccessarily produced by the tree.