Sentence:  ...there has been a gradual process of distillation, leaving just about all the reactionaries, for all their disagreements among themselves, united in the conviction "that there is a real difference between a conscious person and a perfect zombie"–let's call that intuition the <WSD>"Zombic</WSD> Hunch"–leading them to the thesis of "Zombism": that "the fundamental flaw in any mechanistic theory of consciousness is that it cannot account for this important difference". 
Meaning of the word marked with <WSD> tags:  relating to zombies