Individuals also have costly attributes:irritability,demandingness, ineptitude,low social status,geographic inaccessibility(a major consideration in modern society),and so on.

• 个人也有得付出高昂代价的特性，如：脾气暴躁、为人苛刻、办事无能、社会地位低下、居住地相隔遥远（这在现代社会已成为主要考虑的方面）。