Reasoning Ledger
A Reasoning Ledger is a structured record of the reasoning surrounding a decision at the time it is examined. It distinguishes what has been established from what is assumed, uncertain, unsupported, or still unresolved, and records potentially important considerations that have not yet been examined. Its purpose is to make the state of the reasoning visible before the user decides.
Why it matters
Reasoning that is never written down is difficult to examine reliably. It travels as a single confident impression in which fact, assumption, and hope are hard to separate — and that impression is what a person acts on when a decision cannot be undone.
A Reasoning Ledger makes the structure of a decision visible while the decision is still open. Once each material claim is recorded according to its current status, the weak points become easier to identify: the load-bearing assumption no one checked, the question that was never asked, the evidence that was expected to exist but doesn't.
Because the ledger records reasoning rather than outcome, it is honest in a way that hindsight is not. It captures what was known and what was merely believed at the moment of choosing — before the result is in and memory rewrites the story.
What it is not
A Reasoning Ledger is not a pros-and-cons list, a diary entry, or a record of how a decision turned out. It does not tally arguments for and against, and it does not tell you what to decide. And a ledger reconstructed only after the outcome is known cannot provide the same record, because hindsight may alter how the original reasoning is remembered.
In practice
In a ledger, the statement "the market will have recovered by the third quarter" is recorded as an assumption rather than an established fact, because no supporting evidence for that timing has yet been supplied. Recording its status accurately — rather than letting it pass as something known — is the point: the difference is fixed in place where it can be seen and questioned.
Related concepts
- Evidence Gapa claim requiring support that has not yet been supplied
- Decision Readinessthe degree to which the reasoning is sufficiently examined for the user to act under the present conditions
- Decision Examinationthe broader practice of making the structure, support, and limits of reasoning visible before commitment
Questions
How is a Reasoning Ledger different from a pros-and-cons list?
A pros-and-cons list weighs arguments for and against an option. A Reasoning Ledger does something earlier and more basic: it records the claims in your reasoning according to their current status — established, assumed, uncertain, or unsupported — and marks what has not yet been examined. It is concerned with whether the reasoning holds up, not with which side wins.
When should a Reasoning Ledger be drawn up?
Before the decision is committed, while it can still be changed. A ledger reconstructed after the outcome is known cannot preserve the pre-decision state as reliably, because hindsight may alter how the original reasoning is remembered.
Does a Reasoning Ledger tell me what to decide?
No. A Reasoning Ledger accounts for the reasoning surrounding a decision; it does not issue a verdict. It shows you the shape of what you are relying on — the established, the assumed, the uncertain, the unresolved — and leaves the decision itself with you.
Is a Reasoning Ledger a record of the outcome?
No. It records the reasoning at the moment of choosing, not the result that followed. That is deliberate: its purpose is to make the quality of a decision inspectable before the outcome is known, when the outcome cannot yet colour the account.