Words

Credit

KRED-it
Belief, money lent, or a line in a film, from Latin credere, to believe, to trust.
Documented

The belief ledger

Latin credere (to believe, trust) gave creditum, a thing entrusted, a loan. Credo (I believe) built the creed; credit built the loan book; incredible and credulous mark the family's edge cases. Double-entry bookkeeping made the trust literal: creditor and debtor are believer and believed.

Assessment: Documented: the derivation and the accounting usage are elementary Latin and legal history.
Stories

The faith economy

The sermon every economist eventually gives: banks run on belief, currencies on shared credo, and panics are crises of faith. The vocabulary agreed a thousand years before the economists did.

Assessment: Stories: as economics it is a metaphor; as etymology it is simply what the words say.
Interesting claims

The heart's wager

Credere's root may join *kerd- (heart) with *dhe- (to put, do): to place one's heart. If the reconstruction holds, credit, cardiac, and courage (French coeur) sit at one table: every loan is a heart placed in another's keeping.

Assessment: Interesting: the *kerd-dhe compound is a respected reconstruction, not a certainty, filed accordingly.
Sources and further reading
  1. Lewis & Short, 'credere,' 'creditum'
  2. Oxford English Dictionary, 'credit'
  3. Raymond de Roover, on double-entry bookkeeping's creditor/debitor language
Worth asking

What is money if not belief with a balance sheet?

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GR8YFILES · competing origin stories, labeled by the strength of their evidence · readers 14+