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    Adam (the original embryo) does not survive twinning as e... — Carmelics
    Home/Bioethics
    HistoryEditSee Inverse

    Adam (the original embryo) does not survive twinning as either or both twins.

    BioethicsPersonal Identity
    ?Rate how convincing each reason is below to see the overall strength.
    1 reason for
    2 reasons against

    Reasons For

    1 perspective
    Reason for
    ?
    • 1.If Adam survived as both twins, there would be one human being living two distinct individual lives, which is impossible since the twins are clearly two separate human beings.
      ?

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    • 2.If Adam survived as only one twin, there would need to be a non-arbitrary reason to identify Adam with one twin rather than the other, but both twins are qualitatively identical to Adam, so no such reason exists.
      ?

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    • 3.The only remaining option is that Adam does not survive twinning.
      ?

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    Reasons Against

    2 perspectives
    Reason against 1 of 2
    ?
    • 1.An entity can survive fission by being fully identical with each of its successors, as Parfit argues in 'Reasons and Persons' (1984).
      ?

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    • 2.The non-arbitrariness requirement in P2 is met if both twins equally satisfy the survival relation, making Adam's survival a case of branching rather than cessation.
      ?

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    • 3.The impossibility invoked in P1 conflates numerical identity with the persistence of what matters in survival, which Parfit argues are distinct concerns.
      ?

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    Reason against 2 of 2
    ?
    • 1.The four-dimensionalist framework of Lewis and Sider allows that Adam is a temporal stage shared by two distinct person-worms that overlap at the pre-twinning segment.
      ?

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    • 2.On this view, Adam does not cease to exist but is retrospectively identified as the shared initial stage of two persisting four-dimensional entities, preserving a meaningful sense of survival.
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    Topics

    BioethicsPersonal Identity

    Connections

    1 linked claim

    In twinning, the original embryo (Adam) cannot survive as both twins, as only on...

    Related

    An entity can survive fission by being fully identical with each of its successo...If Adam survived as both twins, there would be one human being living two distin...If Adam survived as only one twin, there would need to be a non-arbitrary reason...In twinning, the original embryo (Adam) cannot survive as both twins, as only on...
    +5 moreShow less
    On this view, Adam does not cease to exist but is retrospectively identified as ...The four-dimensionalist framework of Lewis and Sider allows that Adam is a tempo...The impossibility invoked in P1 conflates numerical identity with the persistenc...The non-arbitrariness requirement in P2 is met if both twins equally satisfy the...The only remaining option is that Adam does not survive twinning.

    Similar

    In twinning, the original embryo (Adam) cannot survive as both twins, ...96%If Adam does not survive, new human beings come into existence at twin...87%Adam does not survive twinning, meaning twinning produces two new huma...86%The only remaining option is that Adam does not survive twinning.85%

    Source

    AI-extracted1/3 agreementValid
    SEP: identity-ethics
    View source passageHide passage
    References to identity in this debate come from objectors to this argument, who apply the argument from fission to a real life version of it, namely, twinning. An embryo might split any time generally before the two-week point in fetal development, and those two embryos could develop into fully formed infant twins. The question for the advocate of the above argument to consider is, in such a case, what happens to the original human being, the embryo we will call Adam? There are only three possib
    Extraction notes

    Validity: Extracted via Max plan + API grounding/validity checks

    Details

    Type
    claim
    Perspectives
    3 (1 for, 2 against)
    Edits
    1 edit