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HighlightBuilding an Accounting Ledger · Day 14

Store money like timestamps: keep the original (transaction currency) and derive the display (base) — never round-trip. The exchange difference is the drift between two clock reads, and it's income or expense, not an error.

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This is one tell — the giveaway that AI is bluffing. It comes from Building an Accounting Ledger, a short daily course on Noesa. Anyone can use AI; few can tell when it's wrong.

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