Some topics are general and are regarded as 'classical' because they are always relevant across time periods through being relatable even as time progresses. For example, topics or themes about politics and satire would still prevail until now. Other topics or themes (such as viral videos) are only for that particular event and do not always occur, thus they do not prevail in the long run.
This refers to the story "Marriage is a Private Affair" by Chinua Achebe.
Nnaemeka wants to wait until he can see his father and is able to tell him in person. He is worried that his father will hate the idea of the marriage, because Nene (his fiancé) is not from the Ibo tribe. Moreover, she was not chosen for him in an arranged marriage, as is tradition. Nnaemeka is worried his father will disapprove of the marriage. He ends up being right as the father is enraged to find out the news.
Answer:
Fahrenheit 451 demonstrates the dangers of a society focused only on the immediate gratification of the present. This society has all but erased history. Its members derive meaningless pleasure from watching their "families" on futuristic televisions and don't engage in any meaningful conversations.