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Consider the following passages:

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"An expert need not give the reasons for [her or] his pronouncements -- indeedpronouncements—indeed, [she or] he is most clearly functioning as an authority when [she or] he makes pronouncements without giving reasons, and if [she or] he were to communicate [her or] his reasons in full at the time, then it would no longer be on [her or] his authority that [her or] his pronouncements were accepted" (46).

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"[T]hough we could not understand or recognize an authority for which there was no kind of reason, we do not expect to see these reasons recapitulated at length on every occasion when the authority is consulted, deferred to, followed, or obeyed. Indeed, it is a more typical instance of compliance with authority to stop because a policeman has put up a traffic sign than to stop because he has explained exhaustively the plan for diverting the traffic, and in some [sic!] cases authority cannot function once there has been a complete explanation of the matter in hand: a person who understands a pronouncement completely, with all the reasons for it, can no longer accept it on authority (though [she or] he may still accept it), and Dr. Johnson's dictionary cannot be consulted as an authority by Dr. Johnson" (106).

n.d.