The effect of fluoride on a small gland in the center of the brain - Pineal Gland, is what plays a major role in becoming 'dumbed down', or docile. It only takes 1 or 2 parts per million to begin achieving the effect. The Pineal Gland is involved with maintaining a variety of the brains higher and intuitive capabilities...... we can't have good little sheep walking around using their higher brain powers, else they won't be subservient sheep anymore ;)
an informitive mp3-audio interview with Pam Kileen and a Paul Connett PhD, discussing practical concerns with flouride in water. Just scroll down from the home page link (below) until you see the Anti Fluoride link, will only take a few minutes to download via broadband connection.
PS - and yes, agreed, it's not the easy for any among the masses to become un-assimilated, the lure of the red-pill over the blue-pill has been well orchestrated.