Consensus - Clean Block Signal?

[Dan_ref]

Originally Posted by rfp

...officials use it to signal to everyone that they saw the play clearly - and have nothing

I never use it.

If you saw it clearly then your silent whistle says all that's needed to be said. But if you do use it and then later I don't what is that telling everyone? I missed it now but you had it right before? Or what if you don't use it later on? You telling everyone that you missed this call?

Makes no sense to me.