I'm sorry but "predictable results in communication" is not the criterion for being meaningful. If you fart in a courtroom, you get very predictable results, too. The phrase isn't 'real' just because some people use it. People use "God" quite a lot, and that doesn't make it a meaningful concept.
(why do I feel I just unleashed an unholy flame war from hell with that last analogy?)
(why do I feel I just unleashed an unholy flame war from hell with that last analogy?)