I’m a good judge of character. I get the vibe from the person; and can feel and see that they are evil or not
The 1st scene happens in the middle of the night, on the dark and windy castle wall. The guards are freezing with cold and trembling with fear, as there's a Ghost who appears and wants to say something.
On the other hand, the 2nd scene happens at court, where all the courtiers are present, along with the queen and the new king Claudius. Although the former king has recently passed out (or murdered, as the reader will find out later), everybody is serene and optimistic. Only the melancholic prince Hamlet is missing.
The two settings are juxtaposed with a context that binds them together (adding to the contrast, at the same time): everybody is well aware of the strange and sudden circumstances of the old king's death. The 1st scene is spooky because of his Ghost who seeks young Hamlet. The 2nd scene leaves a bitter taste because his funeral has been followed by a wedding all too soon.
I would say I’d depend. If we’re talking about the dystopian fiction directly, it is an idea of what the future will be like but through the eyes of the author. For example: Among the Hidden talks about a society where 3rd born children are prohibited and killed. If that will ever occur due to lack of economy or food it’s not an actual fact. But, it’s not like it can’t happen either; circumstances are so bad that it can happen. Now, if it impacts the future itself is uncertain because we human beings don’t have the capability of predicting the future. But, it’s possible that a crazy leader can find inspiration in a dystopian book and base rules of it.