Skip to content
Carmelics
TopicsThinkersChangesContributorsLoading account…

    Carmelics

    A reasoning platform. Break down any belief into clear reasons, explore both sides, and weigh the evidence honestly.

    Navigate

    • Topics
    • Search
    • Recent Changes
    • Contribute
    • How It Works
    • Glossary
    • Thinkers
    • Contributors
    • About
    • Statistics
    • Terms
    • Privacy

    Database

    Statements
    —
    Perspectives
    —
    Topics
    —

    Press ? for keyboard shortcuts

    LoyalLoyalJusticeJustice
    Made withinDC&Austin
    Statements
    321,452
    Perspectives
    108,905
    Topics
    42
    Ptolemy's epicycles and Copernicus's heliocentrism both s... — Carmelics
    Home
    HistoryEditSee Inverse

    Part of a larger discussion

    Supports→Ptolemy's astronomical account saves the appearances but may not be true, since the phenomena could be saved in some other way

    Ptolemy's epicycles and Copernicus's heliocentrism both saved identical ancient phenomena, proving underdetermination is not merely hypothetical.

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

    Reasons For

    1 perspective
    Reason for
    ?
    • 1.Both models predicted identical observable positions of celestial bodies for centuries, making empirical data alone insufficient to choose between them.
      ?

      Think about whether this reason is strong or weak

    • 2.This historical case demonstrates underdetermination is not just theoretical but manifested in actual scientific practice and acceptance.
      ?

      Think about whether this reason is strong or weak

    • 3.Additional metaphysical commitments (simplicity, elegance) rather than data drove the eventual shift toward heliocentrism.
      ?

      Think about whether this reason is strong or weak

    Reasons Against

    1 perspective
    Reason against
    ?
    • 1.The models were not truly empirically equivalent: heliocentrism made novel predictions (stellar parallax, phases of Venus) later confirmed.
      ?

      Think about whether this reason is strong or weak

    • 2.Underdetermination requires genuine theoretical equivalence; epicycles required continuous ad-hoc additions while heliocentrism unified phenomena.
      ?

      Think about whether this reason is strong or weak

    • 3.Historical acceptance of heliocentrism resulted from increasing predictive power and scope, not merely non-empirical factors.
      ?

      Think about whether this reason is strong or weak

    Sign in or register to share your perspective on this statement.

    Next step

    Based on where you are in your exploration

    Strongest counterpoint
    Explore the most compelling reason on the other side.

    Connections

    2 topics

    Truth & Knowledge1 linkedSkepticism1 linked

    Related

    Additional metaphysical commitments (simplicity, elegance) rather than data drov...Both models predicted identical observable positions of celestial bodies for cen...Historical acceptance of heliocentrism resulted from increasing predictive power...Ptolemy's astronomical account saves the appearances but may not be true, since ...
    +3 moreShow less
    The models were not truly empirically equivalent: heliocentrism made novel predi...This historical case demonstrates underdetermination is not just theoretical but...Underdetermination requires genuine theoretical equivalence; epicycles required ...

    Details

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