I saw only a hint of addressing the issue of whether the pileups were from multiple persons matching the writer only vs multiple persons matching each other.  Also the issue of whether those non-matches could be explained by an offset of where they match the writer.  I've written multiple times that my sis and I have pileups with >~260 and >~180 respectively at c20 from 17M to 50M for my sis and c18 from 8M to 24M for me.  And they all match each other there subject to their being in the same part of the subsegment.  OTOH I have pileups with only <~15 matches for which only ~1 pair match each other there.  I also have pileups where the persons at the edge of the segment don't match anyone else there but they do match one of the others elsewhere and they match essentially no one else on my list anywhere.  IMO all the posited mechanisms to explain the matching events as IBS are just BS instead with no I.  IMO the only possible mechanism is that the tables for cM vs geno! me site are wrong so even though it is said that it's a match from 17M to 50M =33M wide for my sis, the reality is that for some subgroup it's only ~5cM wide. Multiple writers wrote Subject: Re: [DNA] At what number of matches (at the same loci) are we talking about a pileup?