TThe Diary of a CEO
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Leadership

Best-Available Decision Rule

Decide with current evidence and stop punishing hindsight

Difficulty
Moderate
Time to result
~weeks to results
Steps
5
Confidence
96%

The decision rule is to become as informed as practical, consult people with relevant expertise, decide, and accept that the choice may still be wrong. Poumpouras says confident decision-makers do not require all available information before acting. Observing presidents, she noticed strong inner circles, delegation to people who knew more, sustained preparation, and willingness to make the call. Afterward, evaluate the decision against the information available at the time rather than information discovered later. This separates decision quality from outcome quality and prevents hindsight from turning every disappointing result into proof of personal failure. The framework does not celebrate recklessness: stakes, deadlines, and missing evidence still matter. Its purpose is to stop fear of looking foolish from becoming indefinite non-decision.

Origin

Poumpouras says she observed presidents surround themselves with steady advisers, study extensively, delegate specialist knowledge, and then make the best decision possible with the information available at that moment.

Core principles

  • 01Complete certainty is rarely available
  • 02Good advisers improve inputs without replacing ownership
  • 03A decision can be sound even when its outcome disappoints
  • 04Hindsight must not rewrite what was knowable at the time

How to run it

  1. 1

    Set the decision boundary

    Define exactly what must be decided, by when, and whether delay changes the risk.

    Watch out Life-or-death and irreversible choices need a higher evidence threshold.

  2. 2

    Collect relevant intelligence

    Gather the information most likely to change the choice rather than chasing total knowledge.

    Pro tip Ask what missing fact would actually reverse your current preference.

  3. 3

    Use a steady circle

    Consult informed people who can advise without transmitting panic or demanding that you surrender the decision.

    Pro tip Seek people who know more than you in the specific domain.

  4. 4

    Make the call

    Choose the option best supported by the evidence available before the deadline.

    Pro tip Write down the key facts and assumptions at the moment of choice.

    Watch out Do not confuse discomfort with evidence that more analysis is required.

  5. 5

    Review without rewriting history

    Assess whether the process used the available evidence well, while keeping later discoveries separate from what could have been known then.

    Pro tip Improve the future process without using hindsight as self-punishment.

In the wild

Presidential decisions under uncertainty

Poumpouras describes presidents studying, relying on knowledgeable advisers, and making decisions without complete certainty. The host adds that he heard Barack Obama discuss acting with limited certainty on major decisions; this is presented as the host's recollection.

Preparation and advice supported action despite incomplete information.

Common mistakes

Waiting to know everything

Seeking total certainty can become a socially safer substitute for making the decision.

Judging with future knowledge

Using later information to condemn an earlier choice obscures whether the original process was reasonable.

Is it for you?

Best for

Leaders making consequential but not immediately life-or-death choices under uncertainty.

Not ideal for

Irreversible safety-critical decisions where additional evidence is obtainable before the deadline.

From the transcript

You made the best decision you could with what you knew in that moment.

Evy Poumpouras · (1:05:30)

Confident people are okay with not knowing all the information.

Evy Poumpouras · (1:06:00)

From the episode

Secret Agent (Evy Poumpouras): Never Be Yourself At Work! Authenticity Is Quietly Sabotaging You! - Evy Poumpouras