Thanks, Jim. That’s very helpful, and very reassuring. Neil > Date: Sat, 28 Oct 2017 21:40:13 -0400 > From: Jim Bartlett <[email protected]> > To: <[email protected]> > Subject: [DNA] FTDNA Triangulator and Louis Kessler?s Double Match > Triangulator > > Neil > > The FTDNA Triangulator does have the ability to compare your Matches to confirm 3-way Triangulation - so it should be more accurate. But it?s like 99.9% accurate vs just 99% with DMT. My point here is that both methods, or GEDmatch Tier 1 Triangulation, 23andMe ICW+Yes, and even FTDNA ICW+Overlap methods will result in very nearly the same result: Triangulated Groups (TGs). Any errors will be very small. And if you follow the concept of Genealogy Triangulation - and get several Matches in a TG to agree on the same ancestral line... well - what?s not to like? > > We have restated many times that a single CA (Common Ancestor), even in a TG, means a ?clue? - it?s not by any stretch a ?proof?. > > So my recommendation is to form TGs by whatever method works for you. And, when using atDNA, always be open to adjustment. > > At the end of the day, each shared IBD segment has to be on your paternal chromosome or your maternal chromosome. It?s hard to mix these up with any TG method. > > Jim Bartlett - atDNA blog: www.segmentology.org > >> On Oct 26, 2017, at 11:05 AM, Neil Story <[email protected]> wrote: >> >> I?m not clear on whether the FTDNA Triangulator does more, less, or something different than Louis Kessler?s Double Match Triangulator (http://doublematchtriangulator.com). I have used and like the latter, and know that it doesn?t have a limit on the number of matches, and that it works with GEDmatch and 23andMe as well. Does anyone have insight on the relative merits of the two? Thank you. >> >> Neil Story >