Mubuzima bwa kijyambere murugo, isura yumwanya wubwiherero ntagushidikanya ko ubwiherero bwubwiherero, nkugukoresha cyane ibikoresho byo murugo, akabati keza kandi keza-kabisa kagufasha gukora ibintu mubuzima buhuze kandi bugoye, kugirango ushire, gushaka kumva urumuri rwubuzima.