Marquis's argument has prompted several objections. The contraception objection claims that if Marquis's argument is correct, then, since sperm and ova (or perhaps a sperm and ovum jointly) have a future like ours, contraception would be as wrong as murder; but as this conclusion is (it is said) absurd—even those who believe contraception is wrong do not believe it is as wrong as murder—the argument must be unsound. One response is that neither the sperm, nor the egg, nor any particular sperm-egg combination, will ever "itself" live out a valuable future: what will later have valuable experiences, activities, projects, and enjoyments is a "new entity", a "new organism", that will come into existence at or near conception; and it is "this" entity, not the sperm or egg or any sperm-egg combination, that has a future like ours.