Lapho kuklanywa uhlelo lokuhlunga, kugxilwa kakhulu ngendlela efaneleisihlungi esicwebezelayouqobo—isilinganiso sayo se-micron, izinto ezibonakalayo, kanye nesimo. Kodwa-ke, isikhombimsebenzisi sokuxhumana, isixhumanisi esibalulekile phakathi kwesihlungi nohlelo, sivame ukuba yinto ecatshangelwa kamuva. Uhlobo lokuxhumana olusetshenziswayo lungathinta kakhulu ukusebenza, ukuthembeka, kanye nempilo yesevisi yakhoisihlungi esenziwe ngokwezifiso.