I've been discussing this with a friend and it seems the OSAC and ASB are lost in the semantical weeds. A couple of questions seem hard to pin down, to wit:3.3 disagreement
A single dissimilarity, or an accumulation of dissimilarities, that is deemed to be outside of expected variations in the appearance of impressions from the same source or an accumulation of dissimilarities between two impressions resulting in overall nonconformity.
1) Is “resulting in overall nonconformity” a source exclusion (that is the only conclusion and example that mentions ‘disagreement’, inconclusive with dissimilarities mentions having dissimilarities, not disagreement)? And ‘source exclusion’ says you have to have ‘strong disagreement’. What is the difference between disagreement that results in overall nonconformity and strong disagreement?
2) What would be an example of ‘overall nonconformity’ that would not result in a source exclusion?
3) Is disagreement a factor that lead to an exclusion, or are features labeled as disagreement after a conclusion is arrived at?
In SWGFAST, we agreed on definitions basically that a dissimilarity was something that looks different in a print or impression. A discrepancy is something in the friction ridge skin itself. Therefor, a dissimilarity may or may not lead an examiner to conclude that there is an exclusion. But if a determination is made that a discrepancy exists, then it is an exclusion (except for features such as scars, warts, etc.)