It recognises that capacity can be fluctuating, and that capacity is decision specific – an individual may have capacity to make one decision but not another.
Mae’n cydnabod y gall galluedd amrywio, a bod galluedd yn amrywio’n ôl penderfyniadau – gall unigolyn fod â’r galluedd i wneud un penderfyniad ond nid un arall.