Magruder’s Principle

1-42. Magruder’s principle states that it is generally easier to induce the deception target to maintain a preexisting belief than to deceive the deception target for the purpose of changing that belief. Magruder’s principle exploits target biases and the human tendency to confirm exiting beliefs. Magruder’s principle alludes to two paths. A path of the deceiver changing the belief of a target and a path of maintaining a present belief. The principle then advises the better of the two p...