Frame
Divers plan on the boat, not at the reef — because underwater, air is limited and mistakes compound. Hard calls work the same way: figure out what’s true, decide how to spend what’s scarce, anticipate how things will move, and expect the way back to look different from the way in.
Below: ten mental models in four phases. Each one is interactive — turn the dials and watch the idea respond. I return to them when the terrain starts to differ from the map.
01 Clarify
Physics. Gauges. The failure you design on the boat.
The physics
Depth does not negotiate with hope. First-principles thinking strips best practice and analogy until only what must be true remains — then rebuilds the plan on that. Same as reading the tables before you kit up.
Next: trade-offs (rebuild the axes) · inversion (try to break it)
Try Strip to 5 — leave only what must be true.
The console
Attention is what you put on the console. Every reading should move belief — by the right amount — without flipping the plan on one glance. Objectivity is not empty priors; it is updating in public, on the gauges that matter.
Next: systems (structure, not only events) · first principles when a reading kills a foundation
Try Log three mixed readings — watch early ones move belief more.
The pre-dive
Before you enter, design the end of the dive you refuse. Equipment, separation, current, gas — name the failures, remove their conditions. Inversion is not fear. It is the cheapest insurance on a flattering plan. Presence, not heroics.
Next: incentives (who benefits if this fails) · bottlenecks (one gate can end it)
Try Reveal all four before you fund the descent.
02 Allocate
Most of the living reef is not evenly spread. Neither is attention.
The rich zone
A handful of sites, channels, customers, creatives hold most of the life. The ocean is not a plain; neither is a market. Steepen the skew and watch mass pile into the top of the rank. Strategy is choosing which zones deserve gas — and which to stop watering.
Next: trade-offs (you still cannot max every axis) · bottlenecks (a gate can starve even a rich zone)
Try Push right until the top 3 hold >70%.
Gas · time · depth
You cannot have all three without a price. Deeper costs gas and bottom time; more time costs the profile. On the frontier, every gain is paid in another axis. “Both, fully” is not on the tables.
Next: incentives (what you optimize when every axis is measured) · inversion (what fails if you pretend there is no triangle)
Try Drag to either end — watch the last unit get expensive.
What the computer pays
Divers watch what the computer rewards — NDL, depth alarms, the bright number. Teams do the same with dashboards. Misaligned pay pulls attention into the wrong valley while the real objective goes unvisited. Change the scoreboard and the route redraws. Attention is the first currency the pull spends.
Next: systems (the pull is a loop) · inversion (who benefits if the metric wins and the goal loses)
Try Start misaligned, then drag past 70%.
03 Anticipate
The profile is one system. Throughput is set by the limiting factor — often air, often attention.
The profile
Descent, bottom, ascent, stops — each phase feeds the next with delay. Over-correct on the computer and the profile oscillates. When a team looks irrational, look for the loop. Then keep asking and then what? The first effect is what everyone prices; the rest is where outcomes live.
Next: bottlenecks (find the binding stock) · liminality (when the water’s character changes, the old plan expires)
Try Push past 1.8 — force the profile to ring.
The air
The dive moves at the speed of its limiting factor. Upstream fitness and downstream ambition do not matter if the tank sets the clock — or if the real bottleneck is a mind, a meeting, a single approval. Optimizing a non-constraint is motion without progress. Find the air. Protect it. Adapt the rest.
Next: power law (a few gates dominate) · incentives (local metrics often starve the real limit)
Try Raise the middle bar — watch system rate track the air.
04 Orient
When the water changes. Then surface — and re-enter with a better plan.
The thermocline
A band where the water’s character changes — neither the warm shallows nor the cold blue fully apply. Careers, brands, and markets pass through it. Most divers kick harder. The ones who can hold position long enough redraw the plan — then return to the physics with new first principles.
Next: first principles (rebuild after the band) · scientific optimism (the edge is an invitation, not a verdict)
Try Stop in the band — resist the urge to sprint.
Surface interval
Every dive that maps new ground lengthens the coastline of the unknown. That is not failure; it is the method at work. Problems yield to physics, gauges, and pre-dive honesty. Surface. Log. Protect the interval. Then return to Clarify with better priors — an open log, not a closed atlas.
Next: Bayesian (explore, then update) · first principles (the next descent starts on the tables)
Try Run three dives — watch the edge of the unknown grow.