When we need to expand our ideas to the masses, however, the focus becomes less on what the idea is, and more on how it's delivered. Preying on emotion, sequential logic, and subliminal notes, sometimes even the worst of ideas are promoted as good ideas.
In accordance with the last point of your essay, I'm not sure either, that speaking is used more for good. But if that's the case, now that we have so many people with good ideas, perhaps it's time to focus on delivering good ideas, and making the world better that way. (hmm... I just had an idea)