Shattered glass is the obvious manifestation of the existence of sound waves. OK?
As to seeing sound, no idea where you’re going there. Maybe you’re referring to the Beirut blast?
No.
He means we can see the glass moving. And it’s not moving on its own, the waves are doing it.
He probably just got back from Beirut.
A person is born with a genetic defect (no hearing apparatus whatsoever). They feel vibrations through their sense of touch, when a speaker plays music. Is there sound?
You’re just discussing what I believe future scientists and philosophers will call @theDJR’s differentiation.
Just before the ALT key
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When you buy a table tennis table?
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Well this seems to come back to what you said. If you define sound as what is heard, then it’s not very useful to have a discussion at all. (Although this might mean tinnitus is sound while sound waves propagating in air and shattering glass is not sound). It’s not my definition. But hey whatever anyone likes to believe, just so long as there’s no pretence that this is science rather than subjective semantics.
I think the distinction is useful.
There is sound that can be described through the apparatus of listening to it, and there is sound which has physical properties that have nothing to do with that.
Okay, but the acceptance of one shouldn’t require the rejection of the other…
Nooooooo, but nor does it deny Vinnie’s initial point, so long as we all accept the DJRD.
But obviously I take your/my other point.
It doesnt end.
How is that possible?
Mind bending stuff thanks to quantum mechanics… 
Tinnitus has me thinking…are hallucinations sound?
(Apologies if this has already been covered).
On the sound thing:
If something normally creates a sound, such as a tree falling, even if no one was to hear it, it’s still deemed to have made a sound because it could have been heard, either by recording or a human. Besides, it’s known phenomenon.
Also, if someone answers that with a punny third definition I shall give you a virtual slap.
That’s not a wave, by the way, it’s the sound of one hand clapping. Can you hear it? I reckon I can.
Deeming doesn’t count for shyte.
I mean, I deemed you to be intelligent enough to form an opinion based on rational, scientific argument. Look how that deeming worked out for me. 