 Frankfurt also distinguishes between different sorts of second-order desires. Some are merely desires to have first-order desires, but not that those first-order desires would comprise her will. Frankfurt uses the example of a psychotherapist who wishes to experience a desire for narcotics so as to understand a patient better. The therapist has no wish that this desire be effective in leading her to action (1971, pp.84–5). She wants to know what it is like to feel the craving for the drug; she has no wish to take it. On the other hand, other second-order desires that a person has are desires for effective first-order desires, desires that would comprise her will, and would thereby be effective in moving her all the way to action. For instance, the dieter who is constantly frustrated by her sugar cravings might desire a more effective desire for health, one that would be more effective in guiding her eating habits than it often is. These second-order desires Frankfurt calls second-order volitions. There is no theoretical limit to how highly-ordered one’s desires might be. The dieter in the above example might develop a third-order desire for her second-order desire (regarding her desire for health) not to play such a dominant role in her daily deliberations. Other things, she might reason, are of more importance in life than concerning herself with her dietary motivations.