And scientists have been working on this for years and there's been progress, but it's still a very difficult challenge.

科学家们对此已经研究很久了,并取得了进展,但仍有很大挑战

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So the trick, what we're going to go through here, is this whole scientific process.

因此我们在这儿的技巧是，整个科学过程，并且看看它是怎么进展下去的。

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Doesn't political science make any progress?

政治科学难道没有任何进展吗？

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If so how? And once again he puts forward different arguments; in Book II chapter 8 he compares law to other arts and sciences and suggests why sciences such as medicine and has exhibited progress this should be true for law.

如果可以，如何改？同样地,他从不同的角度来推论;,在第，II，册第，8，章中，他对比法律,与其它的艺术与科学,并暗示像医学等科学都已显示进展,法律也理应如此。

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