I understand this for near relationships but thought it was different for distant ones for some reason. So this means that if there are only two children for several generations on a particular branch, you could never triangulate that branch pas that. For example:

Generation 10 - 1 child

Generation 9 - 1 child

Generation 8 - 2 children

Generation 7 - 2 children

Generation 6 - 1 child

Generation 5 - 1 child

Generation 4 - 7 children

Generation 3 - 20 grandchildren from Generation 5

Generation 2 - 70 great grandchildren from Generation 5

Generation 1 - 160 great, great grandchildren from Generation 5

Generation 0 - 400 third great grandchildren from Generation 5

In this example, this branch of the family tree could only be confirmed through triangulation back to Generation 5 given that there is no possible way to create separate "legs" of the triangle past G5 (assuming that anything beyond Generation 10 would be impossible to triangulate back to). Is this how triangulation works?

Another way to say it is that, you must always have *completely independent* paths back to an MRCA in triangulation?

Thank you for your patience. I want to make sure that I am understanding this right!