这个数字恰好卡在Counterpoint统计的“中国消费者心理防线”——4000元挡位。在国内手机市场，低于4000元，被认为是“中端机”或“准旗舰”，消费者对配置的容忍度较高，更看重性价比；高于4000元，则进入了“高端旗舰”领域，消费者对品牌、质感、影像和创新的要求会呈指数级上升。
Россиянам рассказали о скрытом вреде еды и напитков для похуденияНутрициолог Брабечан: Яблоко и стакан воды будут более зожными, чем суперсмузи
，这一点在新收录的资料中也有详细论述
Browser management (status, shutdown)，更多细节参见新收录的资料
As noted in the section on linked lists, the implementations in the last two sections depends on us recognizing the associativity of addition. This recognition is an example of what I call insight into the nature of a problem. When we understand a problem well we can use our creativity to implement direct and elegant solutions. Creativity has its limits, though: some problems inherently resist understanding while still requiring solutions. In such cases it is desirable to have patterns and heuristics that allow us to muddle through despite our lack of insight.，更多细节参见新收录的资料