The Abilene paradox is a collective fallacy, in which a group of people collectively decide on a course of action that is counter to the preferences of most or all individuals in the group, while each individual believes it to be aligned with the preferences of most of the others. It involves a breakdown of group communication in which each member mistakenly believes that their own preferences are counter to the group's, and therefore does not raise objections, or even states support for an outcome they do not want.
A common phrase relating to the Abilene paradox is a desire to not "rock the boat". This differs from groupthink in that the Abilene paradox is characterized by an inability to perceive the views of others, or to manage agreement.
Harveywas invoked but never defined (see the help page).