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The phrase "Proof of Brain" in an ecosystem ruled by bots is Orwellian Doublespeak on a level which is almost comical. Almost a perfect poster child for George Carlin's skit on Euphemisms.

Brains are important!

Thats the point of view you have and thats fine. But.. if you were being really honest, though i dont agree in the slightest, you would say its "ruled by people using tools".
Id say that youre actually closer to Doublespeak then @phoneinf is. Obscuring the nature of what is actually going on.