Let's mess things up a little bit

You do trying to mess up with my mind Red... Let me think (i just wanna make sure that there's no trap here)... Hmmm... If you mean "nobody" include the living creatures that has its own ears, then who's gonna hear it?.. But still surely make a sound... My answer is, Yes it will still make sound... How do i sure?.. LOL

It's like the Schrondinger's cat in quantum theory. The tree might not make a sound, not necessarily. Maybe it did not even fall, because you can only see it under one circumstance, else it's both laying on the ground "and" standing so alive in the middle of a forest. Therefore; the tree did make a sound and didn't at the same time ;)

Sound is energy dissipated through the surrounding air, water or solids in waves of alternate compression and decompression. The act of falling, itself, may not generate sound but the deceleration of the falling body by something else (including, of course, the air around it as it falls) normally causes energy loss resulting in sound waves. "The laws of physics operate whether we are there to observe them or not and it is very egocentric of humans to say that only what they experience exists, therefore to postulate that, because nobody heard it, a falling tree did not make a sound is illogical and absurd." [Mr Spock: StarTrek - The Final Generation]

If the tree falls completely there will be a sound.From imagination i tell this approximately.If there is nobody or anybody tree makes sound.its quite natural.

yes, it did! I believe that truth is truth and it won't change just because there are no observers. So many things happen without coming to our awareness but it doesn't mean they didn't happen. So I guess, even if nobody was there to hear it, it makes sound!