How to Decide When You Don’t Have Enough Information

Imagine you have just been offered a good role in a city you have never lived in. The offer expires at the end of the month. You do not know whether you will like the place, whether your partner will find work there, or whether the move will look wise or foolish in five years. So you do what careful people do: you research. Cost of living tables, neighbourhood guides, forum threads late into the night. Three weeks in, are you certain yet?

Not quite. And here is the uncomfortable truth: you never will be.

A century ago, the economist Frank Knight drew a distinction in Risk, Uncertainty and Profit that still cuts through most decision advice. Risk is when you do not know the outcome but you know the odds, like a casino table. Uncertainty is when you do not even know the odds. Almost every decision that matters in a life, a relocation, a career change, a business bet, lives in the second category. No spreadsheet converts it into the first.

This matters because research has two very different jobs, and we rarely separate them. Some of what you do not know is simply missing information: the actual rent, the tax rate, whether your industry has a real presence in that city. Research shrinks that pile, and you should let it. But some of what you do not know is genuinely unknowable: whether you will feel at home, who you will meet, what the company will look like in three years. No amount of reading touches that pile. Past a certain point, research stops reducing uncertainty and starts impersonating a decision. It feels like diligence. It is often delay.

So what can you do instead? You cannot remove the uncertainty, but you can structure it. Here is the process I keep coming back to:

1. Define the actual decision and the deadline. Not "should we move" floating in the abstract, but "will I accept this offer by the 30th." A decision without a deadline invites infinite research. If nobody has given you one, set your own.
2. Sort what you know into four piles. Facts you have verified, assumptions you are treating as facts, information you could still get, and things nobody can know. The rent is a fact. "The job market there is strong" is probably an assumption wearing a fact's clothes. This sorting is really a map of your circle of competence, and your mind will resist drawing it honestly, because what you see feels like all there is.
3. Ask how hard the decision is to reverse. In his 2015 letter to Amazon shareholders, Jeff Bezos called irreversible choices one-way doors, and argued that most decisions are not that kind. Much of a move is not: leases end, and cities let you leave. But parts of it can be: a sold family home, a partner's resigned job, a visa that will not be granted twice. Price the way back honestly before you call the door two-way. If the choice truly is one-way, slow down and collect more of the gettable information. If it is genuinely two-way, deciding quickly and adjusting beats deciding perfectly.
4. Play it forward. What happens after the move, and what happens after that? Then imagine it is eighteen months later and the move has clearly failed. What most likely caused it? That single premortem question surfaces the risks your optimism has been quietly editing out. Be careful to weigh what is likely, not what makes the best story, because probability and plausibility are not the same thing.
5. Set your review points before you decide. Write down what you believe, what would count as a warning sign, and under what conditions you would leave. Then put a date on the calendar to reread it. A decision journal does this in fifteen minutes, and it turns a leap of faith into an experiment with an exit.

Notice what these five steps have in common. None of them predicts the future. They replace the impossible question, "what will happen," with questions you can actually answer: what do I know, what can I undo, what would failure look like, when will I check.

This is also why we built ClearMind the way we did. It walks you through structured frameworks like these when your own thinking keeps circling, but it will not tell you whether to move. It is a mirror, not an oracle. It asks the questions, points at the assumptions, and leaves the judgment where it belongs: with you.

There is an old Chinese story about a farmer who lost his horse. What bad luck, said the neighbours. Maybe, said the farmer. The horse returned leading a wild herd. What good fortune. Maybe. His son broke a leg taming one of them. What misfortune. Maybe. Then the army came to conscript young men, and passed over the injured son. The story never ends, and that is the point: outcomes keep unfolding long after the moment you judge them.

You cannot decide your way into a guaranteed future. What you can do is know exactly what you knew, choose with open eyes, and keep the humility to adjust. That is not a lesser kind of deciding. Under real uncertainty, it is the only kind there is.

Certainty is not the reward for good thinking. Peace with uncertainty is.