:::sigh::: The question is... if a tree falls, and no one is there to hear it, does it make a noise? Not, did it fall? Obviously, the fact that it fell is indisputable with evidence of the event. Did it make a noise? Noise, being a sensation of a stimulus. No, if no eardrums senses the vibration of airwaves, then it is not a noise. It is merely a vibration that went unnoticed and uncategorized as a sensation, but it did fall.