"The smart way to keep people passive and obedient is to strictly limit the spectrum of acceptable opinion, but allow very lively debate within that spectrum - even encourage the more critical and dissident views. That gives people the sense that there's free thinking going on, while all the time the presuppositions of the system are being reinforced by the limits put on the range of the debate."
~ Noam Chomsky
"Still, in the universities or in any other institution, you can often find some dissidents hanging around in the woodwork—and they can survive in one fashion or another, particularly if they get community support. But if they become too disruptive or too obstreperous—or you know, too effective—they’re likely to be kicked out. The standard thing, though, is that they won’t make it within the institutions in the first place, particularly if they were that way when they were young—they’ll simply be weeded out somewhere along the line. So in most cases, the people who make it through the institutions and are able to remain in them have already internalized the right kinds of beliefs: it’s not a problem for them to be obedient, they already are obedient, that’s how they got there. And that’s pretty much how the ideological control system perpetuates itself in the schools—that’s the basic story of how it operates, I think."
Noam Chomsky - "The Fate of an Honest Intellectual"
Pressure by peers limits the spectrum; pressure by superiors limits it more and pressure by inferiors limits it less.
Inferences include that the upper, or ruling, socio-economic class has fewer limits and that the lower such class has more limits.
Well stated.