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STR.2:4.1 - State what changed and what remains unknown

Describe the observation with the subject, interval and conditions that change its meaning. “Our three renewal quotes are lower” is not “the market price has permanently collapsed”. “The supplier no longer promises delivery by June” is not evidence that delivery is impossible.

Recover the earlier premise at comparable scope. It may be an explicit model input or an assumption implicit in the chosen direction. Distinguish three kinds of change:

  • A change in the world needs the relevant domain evidence: for example, a supplier has withdrawn an available service.
  • A changed account needs comparison of the earlier and later claims: for example, a forecast now covers a narrower population.
  • A changed basis of choice needs the earlier and proposed or adopted objective, constraint or comparison rule: for example, a new strategic policy admits a kind of commitment previously excluded.

Several can occur together. State what changed in each; proposing a new criterion does not make it applicable, and adopting it does not rewrite earlier observations. Establish who can change a governing condition when its force matters.

If the claims cannot be compared, name the missing fact. An absent old estimate, unknown population or inaccessible contract limits the impact judgment. Uncertainty is a qualified result rather than permission to treat the premise as unchanged.