She’s just extremely thick. Most people’s education doesn’t stop when they leave school, they continue to educate themselves through life experience, books/TV, work, critical thinking, and if they’re lucky, higher education. Jack’s not done any of this. She’s not a deep thinker, or even much of a thinker at all, she does not have an enquiring mind, she does not want to make the effort to educate herself (too much effort!), the nuances are completely lost on her - she just wants the rewards to land in her lap.
TLDR: she’s thick as mince. But inexplicably thinks she is some kind of genius.
TLDR: she’s thick as mince. But inexplicably thinks she is some kind of genius.