Nyora ndima pfupi yenyaya iri pamusoro penyaya inotevera:  MunhuX anodzidzisa unyanzvi hweMunhuY
Chokwadi, heino ndima pfupi: Valor ane ruzivo pamusoro pokukura kwevana vaduku. Valor akadzidzisa Rees unyanzvi hwakadai sokukurukurirana zvinobudirira nevana uye nzira yokusika nayo nzvimbo inokurudzira yokudzidza.