...but nobody hears, did it really fall?

Schroedinger's cat would be able to tell us about this situation, if we open his box and ask him.

In the same vein, if a message is posted to HZ, but nobody replies, did it really matter?

To what end do I mention this?

Well, perhaps if Philip Simon were to pause before gurgitating his thoughts before us, and compose a single, coherent, concise post, then he might get a reply. As it is, replying to one's own posts in a deeply nested self-referential string is a sign of poor personal discipline at the least and perhaps deficient mental process at worst.

SM does the same, and nobody replies to him, either.

A conversation is a two-way thing, you know. One-way it's just blowing steam, or other gas...