"Parallels that Are n't Parallel The key question in any slippery slope appeal is whether the two situations are truly similar in a morally relevant way . If not , then the illustration is guilty of a logical slippery slope fallacy . The analogy fails and the argument falls apart . Are there important differences between pregnancy and kidnapping ? Yes , many . First , the violinist is artificially attached to the woman . A mother 's unborn baby , however , is not surgically connected , nor was it ever `` attached `` to her . Instead , the baby is being produced by the mother 's own body by the natural process of reproduction ."
"It is unclear how this 'natural argument fits in with the concept of rights . We have a right to defend ourselves against maniacs even if it is natural for them with their mental condition to want to kill us ."
"whether the two situations are truly similar in a morally relevant way"
"It is unclear how this 'natural argument fits in with the concept of rights"