Ubume besixhobo somatshini sihlaziywa ngohlalutyo lwezinto ezisemgangathweni kuwo onke amabakala ukusuka kuyilo olusisiseko ukuya kuqinisekisa isantya esiphezulu kunye nokuchaneka okuphezulu kokuqhubekeka koomatshini. Uvavanyo lokulinganisa lokudalwa kwemveliso luye lwaveliswa xa iziko lomatshini lizisa umthwalo ukuze kuqinisekiswe ukuqina kwesixhobo somatshini.