Nrog txoj kev loj hlob ntawm cov cuab yeej siv thev naus laus zis, txawm tias nws yog cov seem uas ua rau cov neeg hlau lossis tag nrho cov neeg hlau, lawv cov kev ua tau zoo dua. Tib lub sijhawm, tus nqi ntawm cov neeg hlau tau muaj qis dua qis dua li ua ntej, yog li lawv tau siv dav. Tam sim no, cov kev lag luam uas cov neeg hlau feem ntau siv yog kev lag luam tsheb, hluav taws xob thiab hluav taws xob, thiab ib qho ntawm nws cov khoom tseem ceeb yog vuam neeg hlau.
Siv cov hlau siv hlau los ua cov haujlwm tiav ntau yam. Ntxiv rau kev siv thev naus laus zis, cov khoom siv hluav taws xob sab nraud ntawm cov neeg hlau yuav tsum tsim kom tau raws li qhov xav tau thiab siv cov neeg siv, xws li kev thau khoom thiab tawm ntawm cov khoom ua haujlwm, kev tsim khoom thiab kev tswj ntawm cov khoom sib dhos, thiab tsim cov qauv ntawm vuam cov txheej txheem, Kev sib raug zoo nrog tus neeg teb xov tooj, thiab lwm yam.
Yog li no, raws li vuam neeg hlau cov cuab yeej siv thev naus laus zis, cov kev sib tham no tsis yog suav hais tias yog nws tus kheej, tab sis yuav tsum muaj kev txiav txim siab los ntawm ntau qhov teeb meem uas tau thov los ntawm tus neeg siv thiab cov neeg tsim khoom siv hlau los xaiv cov cuab yeej zoo tshaj plaws kom ua tiav txoj kev vuam zoo.