JALE cov khoom lag luam sab saum toj tsim cov khoom lag luam hauv tsev, txij li cov khoom siv raw mus txog cov khoom tiav. Qhov zoo tshaj plaws ntawm peb cov khoom ua kom lawv hloov pauv tau nrog cov khoom qub. Peb ntseeg siab tias peb cov qauv kev sib tw nqi yuav ua rau peb cov khoom lag luam yog qhov zoo heev.
