In chapter five we learned that hypnosis helps people alter their perceptions, thoughts, and feelings. Most of the time a hypnotist will use an induction method, the classic "You are getting sleepy" kind of stuff.
I think hypnosis is pretty neat. At my high school's all night grad party we had a hypnotist come and hypnotize some of the kids in my class and it was extremely funny but I had no idea how it worked! In the chapter I really liked learning about the myths of hypnosis! I was really shocked to learn that hypnotized people aren't unaware of their surroundings, I thought they had no idea what was going on, but when my classmates were hypnotized they all knew what was around them and didn't get hurt and run into things.