Mark Zuckerberg

Scores by kind of claim

Each kind of claim is scored on its own, out of 100: the share that held up, with the range it likely falls in. Fewer resolved claims give a wider range.

• Factual claims

  Statements about the present or the past, checked against the record: did they hold up?

  80 74 86

  High confidence, 70 factual claims resolved. From 15 documents, 2017 to 2026; 15 documents sampled from 31 candidates found.

  Not scored: 40 unresolvable, 41 checkable only against their own records.

  See the factual claims

• Predictions

  Statements about events outside the person's control, checked once they fell due: did they come true?

  Insufficient record: 4 predictions resolved, 5 needed for a score.

  Not scored: 98 unresolvable. 12 more fall due later.

  Does not yet allow for how likely each prediction was when made.

  See the predictions

• Promises

  Commitments to the person's or organisation's own future action, with something to deliver: was it delivered?

  85 74 94

  Medium confidence, 16 promises resolved. From 9 documents, 2019 to 2026; 15 documents sampled from 31 candidates found.

  Not scored: 6 unresolvable, 3 not yet due.

  See the promises

• Guidance

  A company's own figures for its results over a period, checked against what it then reported.

  Insufficient record: 0 guidance claims resolved, 5 needed for a score.

  Not scored: 2 not yet due.

  See the guidance

All types combined: 81 (likely 76 to 86, high confidence), from 86 claims: 70 factual claims, 16 promises. It mixes kinds of claim in different proportions for different people, so compare people kind by kind.