Commercial Aviation question - LAX

A Guy Called Tyketto writes:

When you hear it from the controller who has put it to
practical use, and has the qualifications and certifications to operate
that position, and reference it from the same source, that gives one
the certainty.

Certainty comes from seeing it on paper.

But even if you were right, then your claim that it is publicly available
would be wrong. You can't have it both ways.

If Steven or Newps told you the same exact thing, and knowing
that their qualifications can be validated, would you refuse to believe
them?

Yes. They are just names on a screen; and even if they proved to be
controllers, unless all controllers are perfect, that isn't sufficient to make
them sources of certainty.

Wait, don't answer that. You wouldn't believe your own mother if
she came up to you, slapped you in the face, and shouted the answer in
your ear.

She's not a controller, either, nor is she an official document.

If you are who you say you are, you would know more than well
enough to RTFM.

But that wouldn't help, if I need to talk to a controller to be certain.

Which is the final authority? Written documentation or the words of a
controller? If it's a controller, RTFM won't do. If it's RTFM, controller
talk doesn't matter.

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