Manipulation is often considered to be undesirable and morally reprehensible. The object is indeed to make others do things that they would have ordinarily refused to do if asked directly. Even so, this manner of influence is commonly used in the business world – either wittingly or unwittingly, to noble or spurious ends. A better understanding of the underlying mechanisms will help you utilize this phenomenon knowingly, or avoid being manipulated, as the case may be.