Logic / Logic 104 · Atom · ~20 seconds

Sorites

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State

A sorites is a chain of syllogisms with intermediate conclusions left unstated.

Show

All A are B; all B are C; all C are D; ∴ all A are D — two syllogisms compressed into one breath.

Watch for

Test it link by link. One bad link fails the chain, no matter how sound the rest.