Preserve the original
Identify the speaker or author, the publication date, and the edition or venue. Transcribe the relevant passage and record where it appears. Include conditions, uncertainty, and the surrounding context.
Compare like with like
For a forecast, identify the place, time frame, measure, and conditions in the original statement. Use those same terms when examining later evidence. For a definition or message, document the editions, wording, and audience being compared.
State what the evidence supports
Explain how each source bears on the assessment. If the available material leaves an outcome open, describe the missing evidence. Record the review date and identify substantive changes in the revision history.