欧文斯和奥尔森假设，如果类胡萝卜素是稀有的或对健康有要求的，则通过着色指示的类胡萝卜素的存在在配偶选择的背景下将是有意义的。
Owens and Olson hypothesize that the presence of carotenoids, as signaled by coloration, would be meaningful in the context of mate selection if carotenoids were either rare or required for health.
本书面向软件开发人员，假设读者非常聪明但并不拥有业务决策方法的背景知识。
Written for software developers, the book assumes the reader is intelligent but has no background in business decision methods.
Dale：我认为（如果我假设错了，欢迎指正），你的客户拥有很强的技术背景，而且，至少绝大部分技术人员深刻理解了你们的业务。
Dale: It seems to me (correct me if my assumptions are mistaken) that your Customer is highly technical, and many if not all of your technical folks intimately understand your business.
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