Two ledgers, two truths: closed versus open cycle accounting.

The two books

One ledger records what happened. The other tracks what's happening.

The closed ledger is the console's history: every completed cycle with its authorized tier, gate state, pool, realized outcome, and directive compliance — entries that, once written, never change. The open ledger is the console's present: live positions, current risk-at-stop, floating P&L, exposure pressure against the active pool — numbers that are stale minutes after they're read. The two books answer different questions for different consumers. History answers 'is the system working?' and feeds everything analytical. The present answers 'what can we do right now?' and feeds everything operational. Keeping them as physically separate structures, rather than one blended view, is what lets each stay optimized for its job.

Why realized-only history

Evidence must be settled before it counts.

The strictest rule in the accounting: nothing enters the closed ledger, or any evidence stream downstream of it, until it is realized. Floating profit on a running position is not partial evidence of a good cycle — it is no evidence at all, because the entire path from here to close remains unwritten, and open trades are systematically unrepresentative in the worst way: winners are open because they haven't finished winning or are about to give it back; losers are open because their stops haven't been hit yet. Marking evidence to market would inject that bias directly into EV calculations, scorecard verdicts, and the gate's own drawdown arithmetic. Equity peaks and drawdowns are computed on settled equity precisely so a euphoric open book can't inflate the peak and manufacture a phantom drawdown when reality arrives.

Why the present stays present

The open ledger exists to constrain, not to celebrate.

Symmetrically, the open ledger's job is purely operational, and its consumers read it for constraint, not comfort. Carryover accounting reads it for risk-at-stop. Exposure pressure reads it to price how much of the fresh pool the survivors consume. Smart Capacity reads it to resize fresh deployment. What no module reads it for is performance: floating P&L appears on the console as context — the operator should know the book's state — but it carries zero authority anywhere. This is the discipline behind the edge-case rule on the exposure page: an open winner does not refill the pool. The open ledger can only ever shrink what the closed ledger's arithmetic authorized. It never expands it.

• Closed ledger: append-only, settled outcomes, feeds all evidence and all gate arithmetic.
• Open ledger: volatile, risk-at-stop denominated, feeds all capacity constraints.
• Crossing rule: open-book data may reduce authorized deployment; it may never increase evidence, equity peaks, or capacity.

The blur and its cost

Every blended book eventually flatters its owner.

The failure mode the separation prevents is universal enough to state as a law: when settled and unsettled numbers share one view, the unsettled ones get promoted exactly when it feels best and demoted exactly when it hurts. A trader with a big open winner starts treating the week as already-won — evidence inflated, posture loosened — and a trader with open losers quietly excludes them from 'how things are going' because they might still come back. Both distortions run the same direction: toward deploying more than the settled truth justifies. The two-ledger design makes the distortion structurally impossible rather than psychologically resisted. The books cannot flatter because the flattering numbers are locked in a room where no authority-bearing calculation ever looks.

The key idea

Separated books are how the system stays honest with itself.

Every layer of MARS ultimately runs on the console's accounting: gates trust the drawdown, the throttle trusts the exposure figures, the scorecard trusts the outcomes. That trust is affordable only because each number comes from a book with one job and no incentive to lie. Settled history, immutable and complete. Live exposure, current and constraining. Two truths, two ledgers — and the whole stack above them gets to take both for granted.