just found out my genetic lineage can be traced to wallia

[Altruist]

how can they tell you this with any degree of certainty, my pet?

beats me too, ss. when i first heard of that 23andme site, i caged and couldnt believe people were so stupid to pay for an obvious scam that will just get them random percentages presented in the "result"

the discipline dealing with this is called genetic genealogy and, apparently, while no one can claim 100% accuracy for distant history, the results are far more robust (?) than just educated guessing. 

dont ask me more, i found biology to be harder than math and physics combined in hs.