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It's a great job for making it through one of the most difficult parts of this course.

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And I really hope you found it exciting and that you learn something from it.

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So as I told you, understanding all of the background is probably not reasonable here because, you

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know, this whole topic got the Nobel Prize.

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So it's kind of difficult, of course, to understand, and you will probably not understand all the

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background in 100 percent.

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But what's important to realize here is that once you accept how our model is constructed, it is not

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difficult to solve it so we can use the same methods that we have employed previously to solve this

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very difficult problem here.

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And this is really the take home message of the section.

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With this course, you have now all the tools that you need to solve very difficult problems.

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The only really difficulty that you now still have is to really understanding the physics behind it.

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But when you just care about the numerics, you really have all the features available.