Clifford Geertz gave anthropology the idea of thick description: the difference between reporting that an eye twitched and understanding whether it was a blink, a wink, or a parody of a wink. The same physical movement carries entirely different meanings depending on the context that surrounds it.

Two identical scorecards

Promotion committees routinely face two candidates whose numbers are, for practical purposes, indistinguishable. The scorecard is thin description — accurate, comparable, and mute on the one thing that actually matters: what the behaviour means inside this specific organization.

  • One candidate's decisiveness reads as leadership; the other's, as a way of avoiding dissent.
  • One's collaboration builds capability across a team; the other's quietly centralises it around themselves.
  • One's calm signals steadiness under pressure; the other's signals disengagement.

The scorecard gives both pairs the same rating. Thick description is what tells them apart.

Findings should arrive with the texture they were observed in — so leadership can judge the evidence, not just trust a summary of it.

What "thick" adds

Thick description does not replace quantitative data; it re-situates it. It restores the context a score had to strip away in order to be a score: who was in the room, what preceded the decision, how the same act was read by peers, reports and the person themselves.

How we gather it

The method is deliberately unglamorous and its credibility comes from process, not from claiming neutrality:

  • Triangulation — no single observation stands alone before it is written down.
  • Reflexivity — the observer's own position is documented, not pretended away.
  • Inter-rater reliability — more than one set of eyes compares field notes directly.
  • Pattern-holding — a pattern is named only once it recurs, not on the strength of one striking moment.

The practical payoff

Two candidates with identical scorecards do not need the same promotion conversation. One may need a stretch and a mandate; the other may need a boundary and support. Thin description cannot tell you which is which. Thick description can — and that difference is frequently the difference between a promotion that compounds and one that quietly unravels a team.