Before a trade, a trader faces a choice about how to think about the future. One approach claims the market will do something specific: a prediction. Another writes down what to do if several possible things happen: a scenario plan.
The difference is not academic. A prediction is a claim about the market; a scenario plan is a set of your own actions. Only one of them survives contact with an uncertain market.
A prediction claims one specific outcome will happen. A scenario plan writes down your actions for several possible outcomes, each with its own invalidation. Predictions mislead because they claim certainty the market does not offer; scenario plans work because they prepare actions, not certainty.
A Prediction Is a Claim About the Market
A prediction states that a specific thing will happen: price will reach a level, a trend will continue, an event will trigger a move. It is a claim about the market, and it carries a risk: being wrong.
Predictions feel useful because they are simple, but a single forecast has no built-in way to handle the market doing something else.
A Scenario Plan Is a Set of Your Actions
A scenario plan writes down what you will do if several possible things happen, and what would invalidate each idea. It does not claim the market will do anything in particular.
It is a record of your conditions and actions, which is the only part of the situation you control.
| Dimension | Prediction | Scenario plan |
|---|---|---|
| Claims about the market | One specific outcome | None required |
| What it contains | A forecast | Your actions per scenario |
| Handles being wrong | Poorly | Built in, via invalidation |
| What it is | A claim | A plan |
Why Prediction Misleads Trading
A prediction encourages sizing and entering as if the outcome were certain, which removes the risk decisions from the plan.
The market does not owe the prediction anything. When the actual outcome differs, the trader is left improvising instead of following a prewritten action.
Why Scenario Plans Work
A scenario plan writes down the boundary first: what evidence would invalidate the idea, and what you will do if it appears.
It keeps the risk decisions in the plan, where they belong. Preparing for several outcomes is not uncertainty avoidance; it is what makes each outcome tradeable.
Write the observation and its limits, set the boundaries before the outcome is known, and add dated revisions when a condition changes. That is a plan; a forecast is something else.
How to Build a Scenario Plan
For each scenario, write three things: the condition that would appear, the action you would take, and the evidence that would invalidate the idea.
Record the scenarios before the outcome is known. If a condition changes later, add a dated revision instead of replacing the original, so the record stays auditable.
| Scenario | Trigger condition | Planned action | Invalidation |
|---|---|---|---|
| Scenario 1: breaks upward | Holds above $105 on volume | Add at $106, 1R = $1,000 | Breaks back below $102 within 3 trading days: treat as a false breakout and close today's added shares |
| Scenario 2: breaks downward | Breaks and confirms below $95 support | Trim or exit below $95 | Reclaims $98 within 1 trading day: treat as a false breakdown, do not chase short |
| Scenario 3: chops in range | Trades between $95 and $105 | No new position; keep watching | Pins near $95 or $105 for 3 straight days: upgrade to the corresponding breakout or breakdown scenario |
Prices, percentages, and the 1R amount are illustrative, meant to show how specific a scenario plan should get.
At a $100 current price, the three scenarios are mutually exclusive but together cover the most likely paths from here: breaking up, breaking down, or going nowhere. Writing the plan does not require betting on which one happens. It only requires that whichever one does, the trigger price, the action, and the invalidation are already written down, instead of being improvised once the move is underway.
Frequently Asked Questions
Is a market view the same as a prediction?
A market view is a reason for interest; a prediction is a claim about a specific outcome. The plan needs the view, not the prediction.
Can I use scenarios and still be surprised?
Yes. Scenarios are not a claim to have covered everything; they prepare your actions for the outcomes you could name in advance.
Do I need a prediction to place a trade?
No. You need a view, a risk budget, an entry rule, an exit rule, and a review process. None of those requires a forecast.
