Decisions.

The framework

1. 01

   Ask the reversed question — and answer it as actions, not fears.

   Put the decision in front of you and ask: if I wanted this to fail completely, what would I do? Answer with things a person could actually do — hire the cheapest developer, launch before the pricing is settled, leave the one customer who understands the product unmanaged. This is not the pre-mortem from Day 10, which imagines a future failure and asks a group what caused it; inversion asks what you would deliberately do, which is faster and returns items you recognise from your own plan. First attempts come back polite almost every time — adoption was slower than hoped, the market moved — and a polite list is one you can read without changing anything. If nothing on it makes you wince, you have not finished writing it.

2. 02

   Read the list as vetoes — subtraction beats addition.

   Go back through what you wrote and refuse each item. Most of it is not a risk to monitor; it is a behaviour to stop, and stopping is cheaper and far more certain than any positive initiative you could write instead. Turn each fatal item into a rule with an owner and a date: pricing signed before the build begins, the anchor customer called fortnightly by name. The trap is the parallel list, where a team runs the inversion, admires it, then returns to the original plan and executes both. The inversion is not extra input to the plan. It is a set of vetoes over it.

3. 03

   Use it hardest where success refuses to hold still.

   Some decisions have no crisp definition of winning — what makes a good culture, a good year, a good hire — and attacking them directly produces platitudes. Invert instead. What would guarantee this becomes a team good people leave? What would guarantee this brand becomes forgettable? Munger's misery list works precisely because a good life is undefinable while a guaranteed miserable one is short and specific. The inverted answers come back concrete enough to act on this week: the promotion handed to the loudest person, the promise quietly broken in month two. Keep every answer to something a colleague could observe on a Tuesday. The moment the language turns to values, you have stopped writing anything anyone can act on.

4. 04

   Know what inversion cannot tell you.

   Inversion identifies what will kill you. It does not tell you what will make you win, and a plan assembled only from avoided failures produces a business that is safe, competent and unremarkable. Every guarantee you remove raises the floor; none of them raises the ceiling. So run it as one half of a pair: inversion to set the floor, then the positive choices — the field, the advantage, the bet — to reach for the ceiling. A team that has inverted well will mistake the absence of catastrophe for a direction, and spend a year not failing at anything in particular.