ãã
è¾¹é
æ¶çéåè§å¾ï¼Thelawofdiminishingmarginalutilityï¼å称
è¾¹é
æçéåè§å¾ï¼æè¾¹é
产ééåè§å¾ï¼æå¨çæç产è¿ç¨ä¸ï¼å¨å
¶ä»æ¡ä»¶ä¸åï¼å¦ææ¯æ°´å¹³ä¸åï¼çåæä¸ï¼å¢å æç§
ç产è¦ç´ çæå
¥ï¼å½è¯¥ç产è¦ç´ æå
¥æ°éå¢å å°ä¸å®ç¨åº¦ä»¥åï¼å¢å ä¸åä½è¯¥è¦ç´ æ带æ¥çæçå¢å éæ¯éåçï¼è¾¹é
æ¶çéåè§å¾æ¯ä»¥ææ¯æ°´å¹³åå
¶ä»ç产è¦ç´ çæå
¥æ°éä¿æä¸å为æ¡ä»¶çæ¡ä»¶ä¸è¿è¡è®¨è®ºçä¸ç§è§å¾ã
ããæ¯å¦ï¼å¨åç°éæåè¥å¯ä»¥å¢å åä½ç©ç产éï¼å½ä½ åä¸äº©åç°éæ第ä¸ä¸ª100å
¬æ¤åè¥çæ¶åï¼å¢å ç产éæå¤ï¼æ第äºä¸ª100å
¬æ¤åè¥çæ¶åï¼å¢å ç产é就没æ第ä¸ä¸ª 100å
¬æ¤åè¥å¢å ç产éå¤ï¼æ第ä¸ä¸ª100å
¬æ¤åè¥çæ¶åå¢å ç产éå°±æ´å°ï¼ä¹å°±æ¯è¯´ï¼éçææåè¥çå¢å ï¼å¢äº§æåºè¶æ¥è¶ä½ã
ããâä¸ä¸ªåå°ææ°´åï¼ä¸¤ä¸ªåå°æ¬æ°´åï¼
ä¸ä¸ªåå°æ²¡æ°´åâ¦â¦âè¿ä¸ªå¤èæ
äºå¨å¾å¤å¹´ä»¥å就被ææäºçµå½±ï¼å¦ä»æ´ä»¥ææ²çå¤ç§å½¢å¼ä»¤äººè³çè½è¯¦ã人们åç±ä¸ä¸ªåå°çæ
äºä¸åªæ¯å
¶æ
èç趣å³æ¨ªçï¼æ´å¨äºå
¶è´æ¶µå²ççæ·±è¿ãä»ç»æµå¦çè§åº¦ï¼ä¸ä¸ªåå°çæ
äºå°è¯äºä¸ä¸ªè§å¾ï¼è¾¹é
æ¶çéåã