Suppose we're looking at the system isolated from the outside world.
假设我们研究一个,与外部环境。
Not saying that the external circumstances are not important, we should focus also on improving them,bettering them, whether for ourselves,for society at large.
并不是说,外部环境不重要,我们同样应该注重改善外部环境,无论是我们自己,或对整个社会。
For example, if it's more convenient should you change the environment to make the unhealthy food less convenient and make healthy foods more convenient?
举例来说,如果是因为方便,那你改变外部环境,会使得健康食品比垃圾食品更容易获得吗
Third,premise related to the first is opposed to happiness which is primarily function of external circumstances.
第三,这个前提与,与决定幸福的,外部环境无关。
But beyond the extremes, additions or subtractions to our external circumstances make very little difference.
但在这些极端情况之外,增加或减少的外部环境,产生的区别很小。
In general, external circumstances make very little difference.
总得来说,外部环境的影响很小。
External circumstances matter very little. Very little.
外部环境影响甚微。
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