Isikhwama esinamandla esisebenzisekayo esinelogo eprintiweyo lutyalo-mali olugqwesileyo kulo naliphi na ishishini. Ayisiyo kuphela inketho efanelekileyo kubathengi kodwa kunye nesixhobo esinamandla sokuthengisa. Ushicilelo lwesiko luvumela amashishini ukuba adlulise umyalezo wabo ngokufanelekileyo, ngelixa ukuqina kwengxowa kuqinisekisa ukuba ingasetyenziswa amaxesha amaninzi. Ngokusebenzisa iingxowa zokuthenga eziphinda zisetyenziswe, amashishini angabonisa ukuzibophelela kwawo ekuzinzeni ngelixa ephakamisa uphawu lwawo.
Gxininisa ekuboneleleni ngezisombululo zemong pu iminyaka emi-5.