In 1984, one can get "vaporized" for being too intelligent. Why do you think
intelligence in general is dangerous to Big
Brother and totalitarianism?

If you're too intelligent, Big Brother would fear that you would become aware enough to see through the schemes and the lies, and potentially rebel. If the people under a totalitarian government cannot be subdued and are too intelligent, they can become too powerful.

Explanation:

explanation is in the answer

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.