Nyora ndima pfupi yenyaya iri pamusoro penyaya inotevera:  MunhuX anova norudo naMunhuY
Chokwadi, heino ndima pfupi: Davidson naElias vakawirirana pakarepo. Vose vari vaviri vanofarikanya kupedza nguva pamwe chete uye nokukurumidza vanokudziridza mirangariro yakasimba nokuda kwomumwe nomumwe. Pakupedzisira vanotanga kufambidzana uye vanofara zvikuru pamwe chete.