ããããåž°ãã«æž©æ³äœã§ã¢ã«ã³ãåãããããå人é¶çŽ°æž¡ãæ©ããã¯ã·ããããã°èŠé æªã人ã¯çµåãã倧æè¡ãããšå€§äœã€ãžã¡ã®å¯Ÿè±¡ãªãã眰ã²ãŒã é
è»é£ããããå人äŒç€Ÿã§ã¯give-and-takeäŒç€ŸåŽãšå¯Ÿçã«æž¡ãåãããšã