Part of any transaction involves the skill of negotiation. You have to use not only technique but finesse in asking someone to do something you want them to do. Making a deal is an fine art that people practice every day. In my line of work I negotiate with people to give a unit of blood to save lives. Others hope to make a sale or to get things done. Peace requires negotiation too with experienced people making it happen. Negotiation sometimes means going through some dangerous places to get from one place to another.