ations . ▁ ▁Of ▁course , ▁he ▁did ▁not ▁mean ▁that ▁computers ▁would ▁actually ▁compute ▁using ▁words — single ▁words ▁or ▁phr ases — r ather ▁than ▁numbers . ▁He ▁meant ▁that ▁computers ▁would ▁be ▁activ ated ▁by ▁words , ▁which ▁would ▁be ▁converted ▁into ▁a ▁mathematical ▁representation ▁using ▁f uz zy ▁sets ▁and ▁that ▁these ▁f uz zy ▁sets ▁would ▁be ▁mapped ▁by ▁a ▁C W W ▁engine ▁into ▁some ▁other ▁f uz zy ▁set ▁after ▁which ▁the ▁latter ▁would ▁be ▁converted ▁back ▁into ▁a ▁word . ▁A ▁natural ▁question ▁to ▁ask ▁is : ▁Which ▁kind ▁of ▁f uz zy ▁set — type - 1 ▁or ▁type - 2 — should ▁be ▁used ▁as ▁a ▁model ▁for ▁a ▁word ? ▁M end el ▁has ▁argued , ▁on ▁the ▁basis ▁of ▁Karl ▁Po pper ' s ▁concept ▁of ▁F als ification ism , ▁that ▁using ▁a ▁type - 1 ▁f uz zy ▁set ▁as ▁a ▁model ▁for ▁a ▁word ▁is ▁scientific ally ▁incorrect . ▁An ▁interval ▁type - 2 ▁f uz zy ▁set ▁should ▁be ▁used ▁as ▁a ▁( first - order ▁uncertainty ) ▁model ▁for ▁a ▁word . ▁Much ▁research ▁is ▁under ▁way ▁about ▁C W W . ▁ ▁App lications ▁ ▁Type - 2 ▁f uz zy ▁sets ▁were ▁applied ▁in ▁image ▁processing , ▁video ▁processing ▁and ▁computer ▁vision , ▁as ▁well ▁as ▁Fail ure ▁Mode ▁And ▁Effect ▁Analysis . ▁ ▁Further ▁reading ▁ ▁For ▁the ▁reader ▁who ▁is ▁new ▁to ▁interval ▁type - 2 ▁f uz zy ▁sets ▁and ▁systems