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板栗慢慢地抬头，对着妹妹轻声道：没啥，就是看见往常那样热闹的宅子，忽然变成鬼屋一样森冷，觉得心里不好受。It is still Simon, who believes that human "bounded rationality" is embodied in learning as "situational rationality"-learning wherever it is used. People's learning is restricted or promoted by situations. What you want to learn will be applied in what situation, then you should learn these things in what situation. For example, if you want to learn programming, you should learn it in GitHub, because you will program through GitHub in the future. For another example, if you want to learn bargaining skills, you should learn them in actual sales situations, because this skill is ultimately used in sales situations.黑道老大刘德华胆小如鼠，国际刑警谭咏麟装傻摆酷，胖墩曾志伟要被放血，只为争抢一个和尚，各路人马杀到新加坡，为救两条人命，好人坏人疲于奔命。新加坡国庆，达卡喇嘛到新访问，警方因人手不足，逐派探员石头(梁家仁)与国际刑警雷泰(谭咏麟) 合力保护达卡。可惜，在警方严密保护下，达卡仍被赤军刺伤。香港黑道人物大B(刘德华)与女友阿玲(罗美薇)到新加坡旅游，在飞机上巧遇达卡，阿玲同时被刺伤。大B与石头、雷泰联手寻找罕有的P型血者抢救达卡与阿玲，十二小时内要有血到。但所有P型血者都被赤军杀死，最后的P型血者肥波(曾志伟)在惊险的途中...Track and field is the cornerstone of the Olympic Movement and can best embody the motto of "Faster, Higher and Stronger".Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:因为了解，所以豁达。