The interests objection claims that what makes murder wrong is not just the deprivation of a valuable future, but the deprivation of a future that one has an interest in. The embryo has no conscious interest in its future, and so (the objection concludes) to kill it is not wrong. The defender of Marquis-style arguments may, however, give the counterexample of the suicidal teenager who takes no interest in his or her future, but killing whom is nonetheless wrong and murder. If the opponent responds that one can "have" an interest in one's future without "taking" an interest in it, then the defender of the Marquis-style argument can claim that this applies to the embryo. Similarly, if an opponent claims that what is crucial is having a valuable future which one would, under ideal conditions, desire to preserve (whether or not one does "in fact" desire to preserve it), then the defender may ask why the embryo would not, under ideal conditions, desire to preserve its future.