Inversion

A mental model: instead of asking “how do I achieve X?”, ask “how would I guarantee failure?” Then avoid those things.

How It Works

Flip the problem around. If you want to become a better writer, first ask: How would I become a worse writer? Answers: don’t write, write inconsistently, write about boring things. Flip them: write, write consistently, write about things that excite you.

The less intelligent person often has more agency than the “midwit” because they arrive at simple truths without the cognitive horsepower to overcomplicate them. Inversion lets you reach the same simple truths deliberately.

Connection to High Agency

In High Agency in 30 Minutes, inversion is the escape route from the Midwit Trap — the tendency to overcomplicate simple actions. The midwit mistakes simplicity for stupidity.

The process: (1) Stop trying to be the genius, (2) Ask “what would the simple person do?”, (3) Find it via inversion, (4) Take the simple answers seriously before adding any complexity.

Munger: “Invert, Always Invert”

charlie-munger borrowed the concept from the great algebraist Jacobi and made it a cornerstone of his decision-making. His version: “All I want to know is where I’m going to die, so I’ll never go there.”

Munger applies inversion to investing: rather than trying to be brilliant, “it is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent.” Avoid the big mistakes, and the wins take care of themselves. This is circle-of-competence in action — knowing what to avoid.

Naval: Avoid Incorrect Judgments

naval-ravikant echoes Munger almost verbatim: “I don’t believe I have the ability to say what is going to work. Rather, I try to eliminate what’s not going to work.” Good judgment isn’t about being right — it’s about avoiding being wrong.

Inversion Applied to Sleep and Learning

“How would I guarantee that I forget everything I study?” Invert the question and the answer writes itself: pull all-nighters before exams, use an alarm clock to interrupt deep sleep, skip naps, drink caffeine late at night, maintain irregular sleep schedules, and ignore your circadian-rhythm. Wozniak’s sleep article is essentially the inversion playbook applied to learning: identify everything that destroys sleep-dependent memory consolidation, then do the opposite.

Inversion in Software Engineering

The Laws of Software Engineering collection contains many inversion-flavoured laws — laws that are phrased as “here’s what will go wrong,” which is inversion applied to system design:

• murphys-law — “anything that can go wrong will go wrong.” Directly an inversion prompt: enumerate failure modes, design against each.
• brooks-law — “adding manpower to a late project makes it later.” An inversion of the naive scheduling instinct.
• hofstadters-law — “it always takes longer than you expect, even when you account for this law.” Inversion of planning: assume over-run, plan accordingly.
• goodharts-law — “when a measure becomes a target, it ceases to be a good measure.” Inversion of metric design: which metrics will fail on being promoted to target?
• brooks-law + parkinsons-law as a pair — inverting resource planning: less time and fewer people often produce better outcomes than more.
• Chaos engineering (Netflix’s Chaos Monkey) — Murphy’s Law weaponised as deliberate practice; inverting reliability by deliberately causing failures in production.

The general pattern: every law in Milanović’s collection can be read as “here is how you’ll fail if you don’t think about this.” Invert each one and you have a checklist of what to do instead.

Connections

• high-agency — Escape route from the Midwit Trap
• first-principles-thinking — Complementary approach; inversion strips away complexity
• charlie-munger — “Invert, always invert” (from Jacobi)
• naval-ravikant — Eliminate what won’t work rather than predicting what will
• judgment — Inversion is a key tool for better judgment
• mental-models — One of the most powerful models in the latticework
• mental-accounting — People’s tendency to overcomplicate financial decisions
• narrow-bracketing — Both simplify by reducing scope
• sleep-and-learning — Inverting “how to learn well” reveals that sleep is half the answer
• murphys-law — Inversion at the reliability scale: enumerate failures, design against each
• cunninghams-law — Inversion applied to knowledge discovery: post the wrong answer to provoke correction

Sources

• source—high-agency-in-30-minutes — The midwit trap and inversion as escape route
• source—poor-charlies-almanack — Munger’s signature principle: “Invert, always invert”
• source—almanack-of-naval-ravikant — Naval on eliminating incorrect judgments
• source—laws-of-software-engineering — Milanović’s collection is largely inversion-shaped laws: “what goes wrong if you don’t”