Shelf 03.2
Decisions pillar · HiPerformance Culture
Applied Mental Models
Better decisions often come from borrowing a lens rather than working harder inside your own.
This part of the library gathers those lenses: first principles thinking, inversion, second-order thinking and the premortem. Each entry explains what the model actually claims, where it helps, and what the evidence does and does not support.
newest 24 Jul 2026
Most read here · Glossary term
Inversion: Definition and the Mental Model of Working Backwards from Failure →
Editor's Pick · Applied Mental Models
First Principles Thinking: The Neuroscience of Reasoning from Ground Truth
Your brain defaults to analogy, not analysis. Neuroscience reveals the trainable prefrontal circuit behind first principles thinking.
Deep dive · 18 Jun 2026
A route through this shelf
Reading order
Measure yourself
Mental Models Assessment: Which Thinking Frameworks Are You Missing?Get a baseline before you change anything. 20 questions; scored on real dimensions.
Read the evidence
First Principles Thinking: The Neuroscience of Reasoning from Ground TruthThe full argument, chapter by chapter.
Apply it
90-Day Mental Models Protocol: Build Your Cross-Disciplinary Thinking ToolkitA written method to run: 12 weeks.
Check the hype
Do Premortems Work? The Science of Imagining Failure Before It HappensThe risk-identification effect is real; the evidence that premortems improve actual decisions is thinner.
The complete shelf, unpaginated
Holdings
Deep Dives
Long-form investigations with full bibliographies.Guides
Structured, chaptered field manuals.
Protocols
Multi-week programmes with a written method.
Assessments
Scored self-assessments with real question banks.
Trend Breakdowns
Claims from the feed, checked against their sources.
Do Premortems Work? The Science of Imagining Failure Before It HappensThe risk-identification effect is real; the evidence that premortems improve actual decisions is thinner.5 sources scored · 18 Jun 2026
Should You Sleep on a Decision? Unconscious Thought vs. Real Sleep, ScoredSleep genuinely aids insight, but the unconscious-thought shortcut without real sleep lacks reliable support.6 sources scored · 18 Jun 2026
Decision Fatigue: Is Willpower Really a Finite Resource?The finite-resource model has failed replication; real fatigue after sustained work has a different mechanism.5 sources scored · 18 Jun 2026
Glossary
Defined terms, each with its own entry.
Second-Order Thinking: Definition and the Discipline of Considering Consequences of ConsequencesSecond-order thinking traces downstream consequences of an action beyond the obvious outcome, exposing feedback that narrow first-order reasoning misses.Glossary term · 18 Jun 2026
Pareto Principle (80/20 Rule): Definition and Strategic Resource AllocationThe Pareto principle: 80% of outcomes stem from 20% of causes. Understand the power-law mechanism and how to apply it to high-impact decisions.Glossary term · 18 Jun 2026
Opportunity Cost: Definition and the True Price of Every ChoiceOpportunity cost is the value of the best option you forgo with every choice. Understanding it reveals the full price of any decision.Glossary term · 18 Jun 2026
First Principles Thinking: Definition and How to Apply Elon Musk's MethodFirst-principles thinking breaks a problem down to its irreducible truths, then rebuilds solutions from scratch rather than borrowing from convention.Glossary term · 16 Jun 2026
Hanlon's Razor: Definition and Why Stupidity Outweighs MaliceHanlon's Razor holds that incompetence better explains negative outcomes than malice. It corrects a key attribution bias and reduces conflict escalation.Glossary term · 16 Jun 2026
Inversion: Definition and the Mental Model of Working Backwards from FailureInversion is the mental model that reasons backwards from failure rather than forwards to success, surfacing risks optimism systematically hides.Glossary term · 15 Jun 2026
Occam's Razor: Definition and Why the Simplest Explanation Tends to Be RightOccam's Razor is the principle of parsimony: given equal evidence, prefer the simpler explanation. Learn its formal basis, limits, and application.Glossary term · 15 Jun 2026
Search Console, latest pull
Most read on this shelf
- InversionGlossary term
- Do Premortems Work? The Science of Imagining Failure Before It HappensTrend breakdown
- Mental Models Assessment: Which Thinking Frameworks Are You Missing?Assessment
- 90-Day Mental Models Protocol: Build Your Cross-Disciplinary Thinking ToolkitProtocol
- Should You Sleep on a Decision? Unconscious Thought vs. Real Sleep, ScoredTrend breakdown