Zvinhu zvechinyakare zvedunnage, zvakaita sehuni nefuro, zvinowanzoraswa mushure mekushandiswa kamwe chete, zvichikonzera matambudziko ezvakatipoteredza uye kugadzirwa kwemarara. Masisitimu edunnage anogona kushandiswazve, kune rumwe rutivi, anogona kushandiswa kakawanda, zvichideredza marara uye zvichikurudzira kuchengetedzeka.
