Lex’s ‘do we pull the plug?’ showed  clearly that all the attention philosophers devoted to zombies (for the last fifty years maybe?) gives us the non-result that equipped with prior knowledge on the matter we can all imagine zombies, while leaving the crucial question, which is what we do when we precisely do not know is left hanging. And btw it is fascinating that for the sake of consistency with a metaphysical view, say physicalism, one can treat pain, hurt, pleasure, comfort etc as illusory, rather than essential ways organisms have to engage with the reality around them for their survival.