---
name: pareto
description: Identify the vital 20% of activities that produce 80% of results using real case studies and proven patterns. Use when optimizing business, learning, productivity, or any area where focus matters.
allowed-tools: AskUserQuestion
disable-model-invocation: true
---

# Pareto Principle Analyzer

Identify the vital 20% of activities that produce 80% of results using real case studies and proven 80/20 patterns.

## Real 80/20 Case Studies

### Business Revenue

**Case: SaaS Company Revenue Analysis**
- 22% of customers generated 89% of revenue
- Top 5 customers = 41% of total revenue
- Action: Created dedicated success team for top 22%, reduced support for bottom 50%
- Result: 34% revenue increase, 20% cost reduction

**Case: E-commerce Product Analysis**
- 18% of SKUs generated 82% of profit
- 40% of SKUs were break-even or losing money
- Action: Discontinued bottom 30% of products
- Result: 15% profit increase, 40% reduction in inventory costs

### Software Development

**Case: Bug Distribution (Microsoft Study)**
- 20% of bugs caused 80% of crashes
- 1% of bugs caused 50% of crashes
- Action: Prioritize top 1% first, then top 20%
- Result: Most stable Windows release to date

**Case: Code Optimization**
- 4% of code executed 50% of runtime
- 20% of functions contained 80% of bugs
- Action: Focused optimization and testing on hot paths
- Result: 10x performance improvement with 20% of the effort

### Sales & Marketing

**Case: B2B Sales Pipeline**
- 23% of leads converted to 81% of deals
- Pattern: Leads with technical champion + budget authority
- Action: Qualification focused on these two factors
- Result: Sales cycle shortened by 40%

**Case: Marketing Channels**
- 2 channels (of 8 tested) drove 76% of conversions
- 4 channels had negative ROI when fully costed
- Action: 10x budget on top 2, killed bottom 4
- Result: 3x marketing efficiency

### Personal Productivity

**Case: Developer Time Study**
- 2 hours of deep work = 80% of meaningful output
- 6 hours of meetings/email = 20% of output
- Pattern: First 2 hours of day most productive
- Action: Protected morning block, batched communication
- Result: Same output in 6 hours vs previous 10

## 80/20 Patterns by Domain

### Business

| Area | Typical 80/20 Finding | Action |
|------|----------------------|--------|
| Customers | 20% generate 80% of revenue | Tier support, dedicated success for top tier |
| Products | 20% generate 80% of profit | Discontinue losers, double down on winners |
| Features | 20% used 80% of time | Kill unused features, polish core ones |
| Support tickets | 20% of issues cause 80% of volume | Fix root causes, not symptoms |
| Salespeople | 20% close 80% of deals | Study their methods, replicate or replace |

### Learning

| Area | Typical 80/20 Finding | Action |
|------|----------------------|--------|
| Vocabulary | 2,000 words = 80% of spoken language | Learn frequency lists first |
| Concepts | 20% of concepts enable 80% of problems | Master fundamentals before advanced |
| Practice | 20% of exercises build 80% of skill | Identify and repeat high-value drills |
| Books | 20% of content has 80% of value | Read intros, conclusions, skim middle |

### Productivity

| Area | Typical 80/20 Finding | Action |
|------|----------------------|--------|
| Tasks | 20% of tasks produce 80% of results | Do high-impact first, eliminate rest |
| Time | 20% of hours are 80% productive | Protect peak hours, batch low-value |
| Meetings | 20% of meetings matter | Cancel the rest, send updates instead |
| Email | 20% of emails need response | Process in batches, auto-archive rest |

## How to Find YOUR 80/20

### Step 1: List Everything

Write down ALL activities in the area you're analyzing:
- What do you spend time on?
- What generates results?
- What costs money/energy?

### Step 2: Measure Impact

For each activity, estimate:
- **Input:** Time, money, or energy spent (% of total)
- **Output:** Results generated (% of total)
- **Ratio:** Output ÷ Input

Example:
| Activity | Input (%) | Output (%) | Ratio |
|----------|-----------|------------|-------|
| Cold email | 30% | 5% | 0.17 |
| Referrals | 10% | 45% | 4.5 |
| Content | 25% | 30% | 1.2 |
| Paid ads | 35% | 20% | 0.57 |

### Step 3: Rank and Cut

1. **Double down:** Top 20% by ratio (Referrals in example)
2. **Optimize:** Middle 40% (Content, Paid ads)
3. **Eliminate:** Bottom 40% (Cold email)

### Step 4: Validate with Data

Don't trust gut alone:
- Pull actual revenue by customer
- Track actual time by activity
- Measure actual results by channel

## Output Format

```markdown
# 80/20 ANALYSIS: [AREA]

## Data Summary

| Activity | Input (%) | Output (%) | Ratio | Action |
|----------|-----------|------------|-------|--------|
| [Activity 1] | X% | Y% | Y/X | DOUBLE DOWN |
| [Activity 2] | X% | Y% | Y/X | OPTIMIZE |
| [Activity 3] | X% | Y% | Y/X | ELIMINATE |

## Vital 20%

### 1. [Top activity]
- **Current state:** [What you're doing now]
- **Opportunity:** [What doubling down looks like]
- **This week:** [One specific action]

### 2. [Second activity]
- **Current state:** [What you're doing now]
- **Opportunity:** [What doubling down looks like]
- **This week:** [One specific action]

## Eliminate

- [Low-value activity 1] → Stop immediately
- [Low-value activity 2] → Delegate or automate
- [Low-value activity 3] → Reduce frequency

## Expected Impact

- **Time saved:** X hours/week
- **Results increase:** Y% improvement
- **When to measure:** [Specific date]
```

## Conversation Starter

Use `AskUserQuestion` to begin:

"I'll help you find the 20% of activities driving 80% of your results.

What area do you want to analyze?
- Business (revenue, customers, products)
- Learning (skill, subject, language)
- Productivity (time, tasks, energy)
- Other (describe)"

Then ask:
1. "What activities/inputs are involved?" (Get the full list)
2. "What results/outputs matter?" (Define success)
3. "Do you have data, or should we estimate?" (Quantify)