Seems like Main doesn't have much interest in science, even though the printing press was extremely essential for modern science to develop and prosper. We have seen in the past Main does sport an interest in many things, not strictly in books, but maybe science was something like her least favourite subject back in school, in her previous life. Even though it requires a lot of reading. I refuse to believe Main would have been able to brush it off due to self-control. She hasn't got any.

I don't anymore know what to think of the nobles plotting Main's demise. Their previous attempt was so incompetent that it's hard to take them seriously. At least the scene did reveal something: Lots of other nobles apparently hate Ferdinand, yet find it difficult to get rid of him. So, it's not all about Main.