decision-matrix

# Decision Matrix

## What Is It?

A decision matrix is a structured tool for comparing multiple alternatives against weighted criteria to make transparent, defensible choices. It forces explicit trade-off analysis by scoring each option on each criterion, making subjective factors visible and comparable.

**Quick example:**

| Option | Cost (30%) | Speed (25%) | Quality (45%) | Weighted Score |
|--------|-----------|------------|---------------|----------------|
| Option A | 8 (2.4) | 6 (1.5) | 9 (4.05) | **7.95** ← Winner |
| Option B | 6 (1.8) | 9 (2.25) | 7 (3.15) | 7.20 |
| Option C | 9 (2.7) | 4 (1.0) | 6 (2.7) | 6.40 |

The numbers in parentheses show criterion score × weight. Option A wins despite not being fastest or cheapest because quality matters most (45% weight).

## Workflow

Copy this checklist and track your progress:

```
Decision Matrix Progress:
- [ ] Step 1: Frame the decision and list alternatives
- [ ] Step 2: Identify and weight criteria
- [ ] Step 3: Score each alternative on each criterion
- [ ] Step 4: Calculate weighted scores and analyze results
- [ ] Step 5: Validate quality and deliver recommendation
```

**Step 1: Frame the decision and list alternatives**

Ask user for decision context (what are we choosing and why), list of alternatives (specific named options, not generic categories), constraints or dealbreakers (must-have requirements), and stakeholders (who needs to agree). Understanding must-haves helps filter options before scoring. See [Framing Questions](#framing-questions) for clarification prompts.

**Step 2: Identify and weight criteria**

Collaborate with user to identify criteria (what factors matter for this decision), determine weights (which criteria matter most, as percentages summing to 100%), and validate coverage (do criteria capture all important trade-offs). If user is unsure about weighting → Use [resources/template.md](resources/template.md) for weighting techniques. See [Criterion Types](#criterion-types) for