 None of these responses, however, would be an effective defense of Psychofunctionalism, which does not attempt to provide analyses of experiential concepts (or suggest that there would, or could, be any to come). But there is an increasingly popular strategy for defending physicalism against these objections that could be used to defend Psychofunctionalism, namely, to concede that there can be no conceptual analyses of qualitative concepts (such as what it's like to see red or what it's like to feel pain) in purely functional terms, and focus instead on developing arguments to show that the conceivability of zombies neither implies that such creatures are possible nor opens up an explanatory gap.