Where does money come from? Who creates it? What constrains it? — Both mirrors reject “the central bank prints money” and “deposits precede loans,” and both affirm that money is debt; they diverge on the creating agent, the boundary of money, and the nature of the constraint.
The same ledger, two windows opened onto it — the windows differ in size, but there is only one ledger.
Two Mirrors Side by Side
The Circulation–Credit Mirror
- Clearing away the four major theories of money and adopting the credit-creation theory: the instant a bank lends, it books a loan on the asset side and simultaneously books a deposit on the liability side — the money is conjured onto the ledger; reserves are an after-the-fact settlement and regulatory constraint, not a mechanical multiplier.
- The main battlefield is the shadow layer: shadow banks use tradable collateral to issue money-like liabilities through repo and rehypothecation; the quality hierarchy of collateral (Treasuries → MBS → CLO → private credit) determines moneyness.
- Repo is the central hub of shadow money: 100 yuan of Treasuries presses out 90 yuan of cash, the Treasuries stay on the original balance sheet, and the extra 90 yuan of repo liability is new money; the same bond, through rehypothecation, gets used as money three times over.
- Shadow money cannot buy meat, eggs, or milk — only financial assets — the root of why CPI stayed flat after QE while asset prices ballooned; the health of the system requires three-flow joint observation of funding flow, collateral flow, and risk flow.
Representative entries: Modern Money Creation: Money as Debt, Repo and Shadow Money
The Money-and-Banking Mirror
- The essence of money is an IOU / a claim: payment is the transfer of a claim, not the hauling of a physical object; IOUs can be signed and can be redeemed, hence money can be created and can also be destroyed.
- A three-tier structure: central bank → commercial banks → households, with the three parties’ T-accounts booked cell by cell; base money = bank asset / central bank liability, broad money = household asset / bank liability — moneyness is determined by the institutional identity of the debtor.
- “Loans create deposits” is a conclusion of the double-entry accounting identity, not a metaphor; “deposits precede loans” is a category error that pastes the physical causality of commodity money onto a system of ledger entries.
- The destruction end is symmetric with the creation end: repaying a loan makes deposit and loan vanish into thin air in tandem, and remittance back to the treasury amounts to the debtor holding its own IOU — “the money got smaller” is genuine disappearance, not outflow; the constraint is the reserve-ratio ceiling plus the behavioral premise that “depositors do not all withdraw at once.”
Representative entries: The Two-Tier Banking System: T-Accounts and Loans Create Deposits, The Essence of Money Is an IOU: The Creation and Destruction of Credit
Points of Divergence
| Topic | Circulation–Credit Mirror | Money-and-Banking Mirror | Substance of the divergence |
|---|---|---|---|
| The status of shadow banking | The main battlefield of money creation: shadow money is roughly 3x M2, and bond-market repo is the epicenter | The three-tier model has no shadow layer; the boundary of money stops at bank liabilities | Where the boundary of money is drawn — institutionally recognized deposits, or every payable collateral liability |
| What the constraint is | Reserves are only an after-the-fact constraint; the real constraints are haircuts, dealer balance-sheet capacity, capital and leverage ratios, and clearinghouses | The reserve ratio yields an upper bound on derivation (the 100 → 1000 teaching example) plus the statistical premise that depositors do not all withdraw at once | Location of the constraint — a proportional constraint at the central-bank layer vs. a marketized marginal constraint along the collateral chain |
| Where moneyness comes from | From the collateral quality hierarchy, priced by the market and subject to erosion | From the institutional identity hierarchy of the debtor, determined by admission | Is moneyness conferred by institutions, or derived from collateral |
| Emphasis on the destruction mechanism | Destruction = crisis-style evaporation: collateral falls → haircuts rise → a selling spiral, nonlinear and asymmetric | Destruction = an everyday symmetric motion: the two paths of loan repayment and treasury remittance, with accounting-identity-level certainty | Is the disappearance of money the system’s normal breathing, or an eruption of fragility |
Delineating the Domains of Applicability
Ask about central bank policy tools, the accounting definitions of total social financing and M2, “the money shrank — where did it go,” or how a single credit extension derives deposits — the money-and-banking mirror’s three-party T-accounts are the handiest; its blind spot is that the model contains no shadow layer, so it cannot explain phenomena like “the central bank printed no extra money, yet money in the market evaporated” (the 2019 repo money crunch).
Ask about liquidity-crisis early warning, repo and shadow banking, or “why did QE only push up asset prices” — the circulation–credit mirror’s three-flow joint observation and epicenter-locating method are sharper; its blind spots are that its bookkeeping and statistical definitions are less fine-grained than the former’s, its data anchors skew American, and it acknowledges that under China’s pledged-repo regime the shadow amplification ceiling is lower.
The two mirrors share a foundation (loans create deposits; money is debt); the divergence is over which floor to build atop that foundation.
The Balanced Inquiry’s Position
This site does not adjudicate between the two mirrors. The same 90 yuan of cash pressed out of a repo: one mirror sees shadow money born out of thin air, the other sees an off-balance-sheet liability outside the model’s boundary — both images are true: the framework is appearance, money itself is essence, and no single mirror monopolizes it. Seen with one eye the world is flat; it is precisely the parallax between the two images that gives the monetary system its depth. As for which mirror to hold when — that is a matter of timing and position: for everyday derivation, ask the ledger; for crisis evaporation, ask the collateral. The same move, at the first line and at the top line of the hexagram, does not carry the same fortune.