Element 5 off the GPS is a written conclusion, which is chapter 7 in Mastering Genealogical Proof.
First kind of conclusion is a proof statement. Proof statements are appropriate when direct evidence from credible sources agree perfectly with the conclusion. A proof statement can be expressed as a footnote/citation. It must meet 6 criteria:
- The citations are clear, complete & accurate.
- The citations in the footnote or the context (the larger work) identify at least 2 independent sources supporting the conclusion.
- The sources are ones competent genealogists would consult to support the conclusion.
- They cite at least 1 original record.
- They refer to at least 1 primary information item.
- No authored or derivative work, or secondary information remains that could be replaced by original works or primary information.
Oddly, this form of written conclusion (the shortest) is the toughest for me to grok, since it elides sources in favor of the "best" sources. Only if they all agree, but still, it feels weird. Additionally, the explanation is mostly assumed, since only direct information is allowed in a proof statement. I do get it for very supported items that don't have or need a lot of evidence. So, where there's a marriage certificate and a newspaper write-up and a religious record, I want to include all of them, for instance.