引用
最初由 eee904ha 发布
但是生产力包括粮食。其实古代，粮食的产量对于一个国家来说是至关重要的。产粮高的国家意味着人口高，人口高又可以促进生产力的提高，形成良性循环。所以，国家生产力高的国家，粮食产量都不会很低。即使不等于，成正比是应该的。
相对论、量子力学和经典力学是三个看上去完全不同的东西。但是它们做的事情都是差不多的，也就是用来解释这个宇宙。如果经典力学没有被人类发明过（也就是说，经典力学没有存在过），相对论和量子力学照样可以很好的解释这个世界。想象这样一个世界，只有量子力学和相对论，而没有经典力学。这就是我想表达的，经典力学不存在的世界。
说实话，我的中文只有初中水平，你喜欢的话我们就用英文谈。
Well ya'll have to know that the failure of classic mechanics when discribing high-velocity objects LEADS to the birth of S-relativity. In fact yur half right about this. Classic mechanics is a simplified, or said "an approach" to quantum mechanics. Q-mechanics= a lot more accurate but it wouldn't have been there if C-mechanics havent exited in the first place. When a good number of objects apply to a calculation, C-mechanics is required at the sociology level since it's considerably less complicated and provides quicker answers ACCURATE ENOUGH(almost accurate) for the use of it. People calculate cuz they want answers.(some sci-freaks go calculation for calculation though)
one more thing, if you're going astronomy you gotta stick with C-mechanics 4ever. Those things can never be described in a whole with Q-mechanics.
And relativity too...not everything travels that fast, On a Low-velocity Low-mass level relativity can hardly be observed. You either gets C-mechanics in here or just stand yourself up.
well I thought you were talking about armies and social things so...
BTW, Japs were never accurate reguarding military stuff, at least I havent really seen one accurate enough.
