I beg to differ. Quoted inline below is a simple GEDCOM file that shows the problem I see. If you ask for the relationship between the father and the son in this file, in one direction you get just the father-son relationship, in the other direction you get that plus a spurious 1st cousin once removed relationship.
The reason is apparently because the pruning algorithm improperly handles inbreeding in the father's ancestry (Grandpa and Grandma were siblings). If all "relationships" between father and son go only through the father, then the two are just father and son, and not cousins. The fact that the father has genetic heritage from the same ancestor in different ways doesn't change this.
I think the pruning algorithm needs to be improved. It should eliminate relationship paths with a common individual in the ascending side and the descending side unless that individual is the common person at the top of that relationship path.
On Aug 24, 2012, at 12:46 AM, John Nairn wrote:
> In summary, as far as I know:
> 1. The most direct relationship is always found
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