The inclusiveness constraint derives entirely from the needs of practice. No matter what theory of decisional capacity we develop, it must turn out that most ordinary adults count as having capacity most of the time (Buchanan & Brock 1989: 21; Appelbaum 1998). In other words, as a society we are morally committed to imposing minimal restraints on individual choice. Most people are free to make most choices in their lives for themselves, even including self-harming choices. It would therefore