Rau ntau tshaj 20 xyoo, Injet yeej ib txwm tau cog lus rau "muab cov neeg siv khoom nrog cov khoom siv hluav taws xob tshaj lij thiab cov kev daws teeb meem", thiab tau ua tib zoo tsim nws tus kheej cov khoom siv hluav taws xob tshwj xeeb rau txhua tus neeg siv khoom tshwj xeeb nrog cov kev coj ua thiab kev siv tshuab.