^^ Exactly what he said. There's a difference between manipulating a person without knowing you can get anything from them, but you're just doing it to get out of trouble or something, rather than manipulating them to get someone else in trouble on purpose to get everything off you. It's a really daunting method of getting information, but it's not for everybody. That one kid who sits in the back of the room who doesn't talk to anybody? Probably wont be successful. That one kid who's friends with everybody, has the power to be successful. It's all about getting on a personal level with the person, by gaining rapport, making safe-spots, general chit-chat, etc.