▁and ▁wants ▁to ▁learn ▁more ▁about ▁them , ▁without ▁getting ▁into ▁lots ▁of ▁details , ▁the ▁easiest ▁way ▁to ▁do ▁this ▁is ▁to ▁read ▁M end el ' s ▁ 2 0 0 7 ▁magazine ▁article , ▁or ▁Wu ' s ▁brief ▁tutorial ▁on ▁interval ▁type - 2 ▁f uz zy ▁sets ▁and ▁systems . ▁The ▁latter ▁also ▁contains ▁a ▁Mat lab ▁implementation ▁of ▁interval ▁type - 2 ▁f uz zy ▁logic ▁systems . ▁ ▁For ▁the ▁reader ▁who ▁is ▁new ▁to ▁interval ▁type - 2 ▁f uz zy ▁sets ▁and ▁systems ▁and ▁wants ▁to ▁learn ▁more ▁about ▁them , ▁with ▁lots ▁of ▁details , ▁but ▁does ▁not ▁want ▁to ▁first ▁learn ▁about ▁general ▁type - 2 ▁f uz zy ▁sets ▁and ▁systems , ▁the ▁easiest ▁way ▁to ▁do ▁this ▁is ▁to ▁read ▁the ▁journal ▁article ▁by ▁M end el , ▁John ▁and ▁Li u . J . ▁M . ▁M end el , ▁R . ▁I . ▁John ▁and ▁F . ▁Li u , ▁" Interval ▁type - 2 ▁f uz zy ▁logic ▁systems ▁made ▁simple ," ▁IE EE ▁Trans . ▁on ▁F uz zy ▁Systems , ▁vol . ▁ 1 4 , ▁pp .   8 0 8 – 8 2 1 , ▁December ▁ 2 0 0 6 . J . ▁M . ▁M end el , ▁R . ▁I . ▁John ▁and ▁F . ▁Li u , ▁" Interval ▁type - 2 ▁f uz zy ▁logic ▁systems ▁made ▁simple ," ▁IE EE ▁Trans . ▁on ▁F uz zy ▁Systems