First-Principles Thinking
Apply systematic first-principles analysis to break down complex problems into fundamental truths and rebuild solutions from the ground up.
When to Apply This Framework
Use first-principles thinking when you encounter:
- Complex decisions with no clear answer
- Conventional approaches that aren't working
- Assumptions that may be limiting solutions
- Need to innovate beyond industry norms
- Problems that feel "impossible"
The 15 First-Principles Prompts
Category 1: Foundation (Strip to Fundamentals)
1. "What are the physics of this problem?" Strip everything to objective reality. Remove opinions, preferences, and history.
*Apply when:* You need to understand what's actually true vs what you believe is true.
2. "If I couldn't rely on existing assumptions, how would I solve this?" Assumptions are invisible cages. This prompt forces fresh thinking.
*Apply when:* You're stuck in conventional approaches or "the way things are done."
3. "What are the problem's fundamental components?" Break problems into atoms. What are the irreducible elements?
*Apply when:* A problem feels overwhelming or too complex to tackle.
Category 2: Ideal State (Unconstrained Vision)
4. "What would the optimal solution look like if cost didn't exist?" Constraints ruin creativity too early. First imagine the ideal, then work backward.
*Apply when:* Budget or resources are limiting your thinking prematurely.
5. "If I were forced to cut 90 percent of this, what would remain?" Brutal prioritization. What is truly essential?
*Apply when:* You have too many options, features, or tasks competing for attention.
Category 3: Risk Analysis (Failure Modes)
6. "If this failed completely, what would be the root cause?" Start with failure to engineer success. Pre-mortem thinking.
*Apply when:* Planning a launch, making a major commitment, or assessing risk.
7. "What would a solution look like if I ignored industry norms?" Bypass entire industries by refusing to copy them.
*Apply when:* You're building something new or disrupting an existing market.
8. "What part of this is actually impossible and what part just feels impossible?" Most limits are emotional, not physical. Separate real constraints from fear.
*Apply when:* You're hesitating on a big decision or feeling stuck.
Category 4: Breakthrough (Minimum Viable Impact)
9. "What is the minimum viable breakthrough?" Not minimum viable product. Minimum viable *breakthrough*. What's the smallest thing that changes everything?
*Apply when:* You need traction but resources are limited.
10. "If I restarted this entire project today, knowing what I know now, what would I build?" Clean slate thinking. Sunk costs are irrelevant.
*Apply when:* You've accumulated technical debt, complexity, or legacy decisions.
Category 5: Constraints & Politics (Hidden Blockers)
11. "What are the hidden constraints I'm not questioning?" Most problems hide fake walls. Find and challenge them.
*Apply when:* Growth has plateaued or you feel artificially limited.
12. "How would I solve this if I only cared about physics, not politics?" Remove social friction from problem solving. What's the objectively best answer?
*Apply when:* Organizational dynamics are clouding decision-making.
Category 6: Scale & Leverage (10x Thinking)
13. "If I had to achieve this 10 times faster, what would I do?" Extreme deadlines force extreme creativity. Compression reveals what's essential.
*Apply when:* You need to accelerate timelines dramatically.
14. "What would this look like if it had to scale to millions?" Think in orders of magnitude. What breaks? What must change?
*Apply when:* Planning for growth or designing systems.
15. "Which part of this solution creates the most leverage?" Always build the part that changes everything first.
*Apply when:* Deciding where to focus limited resources.
Meta-Prompts (Combining Multiple Lenses)
Full Analysis Stack:
"Break my problem into fundamental truths, strip all assumptions, find the optimal solution, identify hidden constraints, and rebuild the idea from first principles."
Universal Reset:
"If I rebuilt this from raw truth, what would it become?"
How to Structure Your Analysis
When applying first-principles thinking, produce:
- Problem Statement - Clarified, specific challenge
- Assumptions Identified - List of assumptions being questioned
- Fundamental Truths - What is objectively true
- Analysis - Application of relevant prompts from above
- Insights - Key realizations from the analysis
- Recommendations - Actionable next steps
- Open Questions - What still needs investigation
Quick Reference by Situation
| Situation | Start With Prompts |
|---|---|
| Stuck on a decision | #8 (impossible vs feels impossible), #5 (cut 90%) |
| Building something new | #7 (ignore industry norms), #9 (minimum viable breakthrough) |
| Scaling challenges | #13 (10x faster), #14 (scale to millions) |
| Technical debt | #10 (restart today), #3 (fundamental components) |
| Resource constraints | #4 (if cost didn't exist), #15 (maximum leverage) |
| Risk assessment | #6 (pre-mortem), #11 (hidden constraints) |