Marquis’s argument was as was follows: (1) if the reason for why killing an adult human-being can be deducted , and (2) it is assumed “the fetus is the is the sort of being whose life is seriously wrong to end” (Marquis 183), then (3) since the logical reasoning of any sort of killing is logically understood, rather than simply being a known truth, it can be concluded that is wrong to abort a fetus. Marquis reasoned that is wrong to kill because “the loss of one’s life deprives one of all experiences, activities, enjoyments that would have otherwise constituted ones’ future” (Marquis, 189), the future deprivation account. Thus, because the reason of why killing any human-being can be reasoned though the future deprivation account, Marquis established that abortion is immoral. Alternatively, in Judith Thomson’s paper A Defense of Abortion, the permissibility of abortion is demonstrated. Thomson uses thoughts experiments in her paper to put the abortion controversy in