Quote Originally Posted by Timon View Post
I did not take the sentence with "the" from another text but from the same one with no article. And you can see that it is the solid paragraph. So the author's style is quite changeable
I think you misunderstood me. I know that it was all one text. He used "the" in the first sentence of his text and therefore did not need to use it yet again in part B of the rest of his text. It is implied. He did not have to repeat the "the" as he already used it in his opening remarks.

So, the author is not changing his style at all. He is taking out the redundancy.