▁nature ▁does ▁not ▁otherwise ▁supply ▁their ▁wants ; ▁and ▁the ▁development ▁in ▁history ▁of ▁the ▁product ive ▁power ▁of ▁man ▁( that ▁is , ▁of ▁man ▁as ▁such , ▁of ▁man ▁as ▁a ▁species ) ▁occurs ▁at ▁the ▁exp ense ▁of ▁the ▁cre ative ▁capacity ▁of ▁the ▁men ▁who ▁are ▁agents ▁and ▁vict ims ▁of ▁that ▁development .' ▁( p . ▁ 1 6 6 ▁in ▁ed . ▁Call in icos , ▁ 1 9 8 9 ) ▁ ▁The ▁imp lication ▁of ▁this ▁is ▁that ▁hence ▁' one ▁might ▁... ▁imagine ▁two ▁kinds ▁of ▁creature , ▁one ▁whose ▁ess ence ▁it ▁was ▁to ▁create ▁and ▁the ▁other ▁not , ▁under going ▁similarly ▁to ils ome ▁histor ies ▁because ▁of ▁similarly ▁ad verse ▁circumstances . ▁In ▁one ▁case , ▁but ▁not ▁the ▁other , ▁the ▁to il ▁would ▁be ▁a ▁self - al ien ating ▁exercise ▁of ▁essential ▁powers ' ▁( p .   1 7 0 ). ▁Hence , ▁' histor ical ▁material ism ▁and ▁Marx ist ▁philosoph ical ▁anth rop ology ▁are ▁independent ▁of , ▁though ▁also ▁consistent ▁with , ▁each ▁other ' ▁( p .   1 7 4 , ▁see ▁especially ▁sections ▁ 1 0 ▁and ▁ 1 1 ). ▁The ▁problem ▁is ▁this : ▁it ▁seems ▁as ▁though ▁the ▁motiv ation ▁most ▁people ▁have ▁for ▁the ▁work ▁they ▁do ▁isn ' t ▁the ▁exercise ▁of ▁their ▁cre ative ▁capacity ; ▁on ▁the ▁contrary , ▁labour ▁is ▁al ien ated ▁by ▁definition ▁in ▁the ▁capital ist ▁system ▁based ▁on