 One should not be too impressed by evidence of ‘behavioural inertia’, however, as there are also many examples in the literature of delusions driving action. Affected by perceptual delusional bicephaly, the delusion that one has two heads, a man who believed that the second head belonged to his wife’s gynecologist attempted to attack it with an axe. When the attack failed he attempted it to shoot it down and as a result he was hospitalized with gunshot wounds (Ames 1984). Cases of Cotard delusion have been reported where people stop eating and bathing themselves as a consequence of believing that they are dead (Young and Leafhead 1996).