Their underlying reason for disputing this theory is that, in their studies of human evolution, they have encountered other primates, man's closest, hairiest relatives, who have longer fourth fingers.

他们质疑此理论的根本原因是，在对人类进化的研究中，他们发现其它灵长类动物的无名指最长，而这种灵长类恰恰是毛发最多，且跟人类最近的近亲。