Let me speak to you about dumbness because that is what schools teach best. Old-fashioned dumbness used to be simple ignorance: you didn't know something, but there were ways to find out if you wanted to. Government-controlled schooling didn't eliminate dumbness - in fact, we now know that people read more fluently before we had forced schooling - but dumbness was transformed. Now dumb people aren't just ignorant; they're the victims of the non-thought of secondhand ideas. Dumb people are now well-informed about the opinions of Time magazine and CBS, The New York Times and the President; their job is...