Reading an outcome
A flattering record is worse than no record at all.
Record every outcome the same way, win or loss, and keep the trade journal honest enough to be evidence. Explain why unrecorded trades always inflate a win rate, what a sample of twenty trades can and cannot establish, why a win rate means nothing without the average win and loss in R beside it, and how to grade a decision separately from the result it happened to produce — the difference between process and outcome that turns a trade log from a diary into data.
5 chapters · 6 quiz questions · 12 terms · included with a plan
Otus, on this module
Your record is the only evidence you will ever have about your own trading, and it is the easiest thing in the product to corrupt — not by lying, but by forgetting. The trades that go unrecorded are not a random sample of the trades taken, and that single fact bends every number built on top of them.
The chapters
Each module ends with you doing what it taught — a written answer Otus reads, and a quiz.
- 01 · Read
The trades that are not in the journal
Trade journals are rarely falsified. They are edited — by selective forgetting.
- 02 · Read
Why a loss pays exactly what a win pays
A design decision with a database constraint behind it — not a kindness.
- 03 · Read
What twenty trades can and cannot say
A win rate is not a verdict, and a single result is not a grade.
- 04 · Read
Open the trade log and count
Count the rows, then count the trades actually taken.
- 05 · Write
In your own words
Two sentences. Otus reads them.
- 06 · Quiz
Knowledge check
Six questions. A wrong answer still earns XP; it only breaks the combo.
12 terms this module defines
The same definitions Otus uses in the lessons. All of them are in the trading glossary.
- Outcome
- What actually happened to a position, written down once it is closed. Every closed position is one, including the scratches and the ones closed early.
- The missing rows
- Trades that were taken and never recorded. They are not a random sample — they lean toward losses and toward the trades nobody is proud of.
- Win rate
- The share of recorded trades that closed in profit. On its own it says nothing about whether an approach makes money — it has to be read beside the average win and loss in R.
- Sample size
- How many trades a figure rests on. At twenty, an approach that truly wins half the time routinely shows anything from six to fourteen winners, so twenty says almost nothing about an edge.
- Expectancy
- The average result per trade, measured in R: win rate times average win, minus loss rate times average loss. Together with the win rate it tells the whole story; either one alone is close to meaningless.
- Process versus outcome
- Two separate judgements about one trade: whether the decision would be made again knowing only what was known at the time, and what it happened to pay. A good decision loses regularly.
- Trade journal
- The written record of every trade taken: the plan, the numbers and the outcome. Its value depends entirely on completeness — a journal missing its losses describes a trader who does not exist.
- Selection bias
- A distortion caused by which data made it into a set rather than by the data itself. In a trade journal, the unrecorded trades lean toward losses, so the recorded win rate is inflated.
- Outcome bias
- Judging the quality of a decision by its result. It rewards lucky bad trades, punishes sound ones that lost, and slowly replaces a tested process with a superstitious one.
- Scratch
- A trade closed at or near breakeven, often by hand and early. It is still an outcome and belongs in the record — scratches are among the rows most often left out.
- Variance
- The natural scatter of results around their true average. Over small samples it is large enough to make a sound approach look broken and a weak one look brilliant.
- Edge
- A genuine, repeatable advantage — a positive expectancy that holds up over a large sample. It cannot be seen in a handful of trades, only in a complete record of many.
Finishing it pays 150 XP and 3 keys on the game board, on top of what each chapter earns. XP measures what you learned — never what you earned. How levels work.
Education only. Nothing here is a recommendation to buy or sell anything; the school teaches reading charts, never predictions.
Start with lesson one.
The first modules, Otus as your tutor and the game board are free. No card needed.