 In response to this objection, higher-order theorists will join forces with first-order theorists and others in claiming that these objectors pitch the standards for explaining phenomenal consciousness too high (Block and Stalnaker 1999; Tye 1999; Carruthers 2000, 2005; Lycan 2001). They will insist that a reductive explanation of something—and of phenomenal consciousness in particular—doesn’t have to be such that we cannot conceive of the explanandum (that which is being explained) in the absence of the explanans (that which does the explaining). (Indeed, we can also explain why no such explanation can be forthcoming, in terms of our possession of purely recognitional concepts of experience.) Rather, we just need to have good reason to think that the explained properties are constituted by the explaining ones, in such a way that nothing else needed to be added to the world once the explaining properties were present, in order for the world to contain the target phenomenon. But this is hotly contested territory. And it is on this ground that the battle for phenomenal consciousness may ultimately be won or lost.