Understand the Business Moat
Only invest in businesses you truly understand with lasting competitive advantages. Duan only invests in a handful of companies he deeply understands like Apple Study the business until you can explain its moat to a child Deep understanding of competitive advantage is prerequisite for investment Key insight: Duan follows Buffett circle of competence principle. Start with a minimal checklist: Am I doing the right thing?; Is my direction correct?; Should I reconsider my path?. Analyzing a business is like choosing a long-term partner.
- Am I doing the right thing?
- Is my direction correct?
- Should I reconsider my path?
- Prioritize strategic direction over tactical execution
Avoid misuse: Buying narratives instead of cash-generating economics
Only invest in businesses you truly understand and that have sustainable competitive advantages. If you can't explain the moat in simple terms, you don't understand the business.
🏠 Everyday Analogy
📖 Core Interpretation
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❓ Why It Matters
🎯 How to Practice
🎙️ Master's Voice
⚔️ Practical Guide
✅ Decision Checklist
- Am I doing the right thing?
- Is my direction correct?
- Should I reconsider my path?
📋 Action Steps
- Prioritize strategic direction over tactical execution
- Regularly question if you are on the right path
- Be willing to change direction entirely
🚨 Warning Signs
- Perfect execution on wrong strategy
- Never questioning direction
- Optimizing the wrong thing
⚠️ Common Pitfalls
📚 Case Studies
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