 Sida lagu ogaado caanaha caruurta ee been abuurka ah Tirada caruurta ku dhalaneysa Shiinaha oo sare u kacday Mid ka mid ah cilmi baarayaasha, Mary Renfrew, oo ka socota jaamacadda Dundee, ayaa sheegtay: Aad ayey u adag tahay in dumarka ay caruurta nuujiyaan ayagoon haysan qoys iyo bulsho adag oo taageeraya, taasina waxaa ugu wacan caqabadaha bulshada haysta. 