Three buckets
Three buckets: established, contested and unsourced, each with its sorting rule. A claim that Note G has an error drops into established; a claim that Ada made the error drops into contested.
Sorting claims into three buckets
Established
You can name the source, and
someone accountable looked at it.
Contested
Sources disagree, or one account
copied forward with no check.
Unsourced
No source you can name yet.
No weight; not the same as false.
"Note G has an error"
"Ada made the error"
nothing filed here yet
Repetition is not corroboration.