Abantu abaninzi bazifunda kumabanga okuqala izibalo, kodwa anaye abantu abazifundi kwa ukuzifunda izibalo babe abo babekhe bazifunda sele belibele kwanto abakhe bayifunda ngezibalo. Imisebenzi emininzi ifuna ulwazi lwezibalo, kwaye abaqashi abaninzi bakhalaza mihla le ngelithi kunzima ukufumana abantu abazazi ngokupheleleyo izibalo. Embalwa kwimisebenzi emininzi efuna ulwazi ngezibalo ibandakanya ubuchweli, iplumbers, i-auto mechanics, iiaccountant, i-architects, oogqirha, kunye namanesi. Izibalo zifuneka kuzo zonke iinkalo zemathematics, kwisayensi, nakubunjineli.