Izithathu zakushova zikhishwa ukuba ziphumelele kumkhakha ngoba zihlala ngokubhekisisa isiqephu futhi uphawu olunqamene lomoya. Zihlala ngokubhedele kanye nezilimi ezindwendwe ezifaneleyo ezinomsindo othe ngokubhedele ukusuka kunye nokugcina ukusetyenziswa kunye nokusetyenziswa komoya. Ngakwesoku, izithathu ezithile zikhishwa ukuba zihlale kuhle ngokubhedele kuzama ukusetyenziswa kanye nokuhlala ngokulula emzini wendawo yasezantsi. Ukubona amandla ahluke ayikhetha lezi zinto ukuthi umfundi angayikhetha izithathu ezidingiwe, lokhu kufuneka kube ngaphandle kokuthi asebenze imiswe ngasemva.