Ah, thanks yuanzhumin for clearing that up for me. If the gradually tapering tips are used for work, then the abruptly ending tips must be for war and ceremony yes? I wonder, is there any advantage of using tjakit with abruptly ending points for combat versus utility tasks? Or maybe it was simply a sort of cultural preference...
Did the Paiwan have metal socket handled tjakit as the Atayal have for laraw? I ask because I know that some smiths today do make socket handles on tjakit, but I haven't seen any pictures of antiques with such handles.
Maybe I haven't seen enough...