All of these money manipulation techniques basically amount to forms of currency devaluation, even if that is not their overt goal.

FORBES: Economic Booms And Busts Of The Gold Standard Era

To many people, sales is a shady profession, predicated on shark-like closing techniques, manipulation, and shallow, transactional relationships.

FORBES: To Succeed in Sales, Suspend Your Self-Interest

They master special techniques such as improvisational singing, falsetto, simultaneous manipulation of several puppets, and the ability to play various musical instruments.

UNESCO: Intangible Cultural Heritage