Those negotiation tactics actually have applications in a lot of different fields. I remember working at a hospital in the 1990's when working, and being paid for, overtime was allowed. One time my supervisor came to me about a half an hour before my shift ended and asked me to work four hours of overtime. I was shocked and said I couldn't, but I COULD work one or two hours. The supervisor then asked me for two hours, and I agreed. When I related this incident to my mother later, she told me about that type of negotiation tactic, that they never really wanted four hours out of me, but wanted me to agree to two hours without complaint. It made sense when I thought about it.