Izibane ezilumkisa uqhushumbo zisetyenziselwa ukukhupha imiqondiso ecacileyo kwiindawo ezinokutsha neziqhumayo. Ukukhanya okukhulu kunye nokutshintsha kombala kwandisa ulwazi ngokhuseleko kwaye kuthintele iingozi ezinokuba yingozi. Ezi zibane ziyilelwe ukuba zisebenze ngokukhuselekileyo nakwiimeko zoshishino eziyingozi.