 Suppose the police appeared on the kidnapping scene and prevented you from signing the [ransom payment] document, perhaps with the outcome that your child was shot. They might have good public policy reasons for doing this … but it would be preposterous for them to claim that they were doing it because the consent you were trying to give would be invalid … [T]he whole point of declaring invalidity is to protect the alleged consenter, and here the police would actually be compounding the wrong done to you by constricting still further the range of options already constricted by the kidnapper (Radcliffe Richards 2010, 294).