You may have heard this riddle before:

If a tree falls down and no-one's around, does it make a sound?

The experts I've heard of all say "NO", it does not.

I don't agree. The sound we hear is created by air waves set in motion, and a falling tree causes just that. There are sound waves all around the forest when it falls.

Sure, there's no-one there to hear them, but that's not the question. The question is "does it make a sound", and I say "yes, it does".

Why am I wrong??