Reversible and Irreversible Decisions
Shane Parrish unpacks Jeff Bezos's "two-way door" mental model for sorting decisions. Type 1 decisions are one-way doors — consequential, hard to reverse — and deserve slow, careful deliberation. Type 2 decisions are two-way doors — you can walk through, look around, and come back if you don't like it. The piece argues that growing organisations habitually treat Type 2 decisions as if they were Type 1, producing slowness, risk-aversion, and a collapse of experimentation.
Opens on fs.blog · Curated by GlobeRead
GlobeRead's Take
One of the quieter consequences of modern decision culture is that almost every choice gets weighed with the same heavy machinery — endless meetings, decks, sign-offs, dashboards — regardless of how reversible the outcome actually is. Parrish's piece arrives as a useful corrective because it offers not a new framework but a sorting rule that lets you decide how much deliberation a decision actually deserves. The result is a faster, lighter relationship with most of the things you have to choose.nnThe central distinction, borrowed from one of Bezos's shareholder letters, is between Type 1 and Type 2 decisions. A Type 1 decision is a one-way door: the door closes behind you, the consequences are durable, and the cost of unwinding the choice is enormous. Hiring a co-founder, exiting a marriage, taking a public company private, betting the firm on a single product line — all are doors that should be approached methodically, deliberately, even slowly. A Type 2 decision is a two-way door: launching a new email format, trying a different morning routine, hiring a junior person, running a small pricing experiment. If it doesn't work, you walk back through.nnThe second move worth attention is the diagnosis of where this goes wrong in organisations. As companies scale, they tend to apply Type 1 process to Type 2 decisions, and the cost is almost invisible — you don't see the experiments that weren't run, the variants that weren't tested, the bets that weren't made because the deliberation cost was too high. Bezos's specific worry: heavyweight process turns into "slowness, unthoughtful risk aversion, failure to experiment sufficiently, and consequently diminished invention."nnWe picked this because the rule travels well outside of business — into personal life, parenting, creative work, even health decisions. Useful for anyone who feels stuck in their own deliberation. The harder question Parrish leaves you with is which doors you've been treating as one-way that were actually two-way all along.
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