 But there is a problem with seeing the availability of a two-model account as a sufficient condition for the relevant kind of make-believe. There are people suffering from various clinical syndromes who also activate distinct models of this kind, prompting them to exhibit incoherent patterns of behavior. Thus, consider people affected by the Capgras syndrome. While saying that a close relative has been replaced by an impostor, they also behave in a friendly manner towards this “impostor”. Such people are perhaps best interpreted as people whose odd beliefs are not integrated into a single belief system (Young 2000).