Ե ֧ кǹԴ (Value Added) ª (Use Value) š¹ (Exchange Value) ѵʧͺʹͧͧͧçԵ йԵ֧ҧسͧԹöʹͧͺͧͧ (Utility)
ҧسͧԹöͺʹͧͧͧѲػ ѧ
    1. á ҧԹöͺʹͧͧͧͧ ؤ¡ Hunting and Gathering ؤɵҵ
    2. ͧ ҧԹöͺʹͧͧͧªؤ ҳԪ ؤѵصˡ ҳԪ¡ ؤͧҹѴԵԷҾ Եҡع Եҡͧҡ֧ͧԸЪҡ ѹԹ (Over consumption) ŧعԹ (Over investment) Ѿҡ١ҧǴ Դѭҡ
    3. ˹ѡ֧ѭԴ Ѿҡӹǹѧª ֧ʹ кǹԵ ѧҧ Դ˹ѧԴк ѨԵԴ˹Ե͹ѨԵ ¡ Ѿҡ ͧѾ Ӥѭ Ҕ աԴк شҧ (Ends) ͧͧ Եѧ ͧ Եԭҳ ҡѺӤѭ سҔ ͧ
ͧآͧҵ˹ѡçͧͧѧ ѡѹç ɰԨ§ (Self Sufficient Economy)