whole process of word memorization; perhaps I should add the word command. When you direct the brain to do a task, it releases powerful chemicals in the direction requested. These chemicals are so powerful that if one hundred people with major medical depression—documented by a medical PET scan—are given a placebo, 33 percent will respond and their PET scan often returns to normal. They respond to the power of strong direction. Though they receive a placebo, they direct their brain toward recovery.