Someone asked upthread what's thought provoking about it.
It made me think about what concepts we would have if we experienced the world for the first time, without any prior concepts, as adults with engaged and functioning brains. It's a "state of nature"/ "blank slate" story which in general I quite like. I enjoyed the thought experiment of seeing how different influences (like being exposed to philosophy, experiencing friendship, experiencing inequality) would pull her in different directions, given that she has no real practical responsibilities of constraints. All her constraints are through power dynamics and inexperience: she doesn't have responsibilities, or authority figures, or financial worries.
It also made me think about the ways in which some men will sexualise anyone with a female body, as if the body is all that matters. As an anecdote, my DH found the film unwatchable. He thought the scene where she's a child and the med doctor just focuses on her beauty was disgusting and exploitative of people with disabilities. I found it weirdly moving because it reminded me of experiencing men clearly eyeing me and my friends up when we were very young, 13 or 14 maybe, and it was a stark way of driving home really what it's like to grow up in a society that places so much emphasis on you as a sexual object, even when you are too young to want anything sexually yourself or even understand it.
A small detail, but I found the dream like quality interesting. Many of the things that Bella sees and is told make no sense when you think about them properly, but they have that superficial plausibility you get from dream narratives. For example, the brothel owner tells Bella that she can't turn away customers because she has a baby who is sick and would die without the money for medicine: then she picks up this little baby from a nook in the wall and shows it to Bella. What are we supposed to make of this? Perhaps the brothel owner is just lying, but the hazy details (baby has never been mentioned, whose baby is she, why is she sleeping in the wall, what is wrong with her, etc.) make it all feel dreamlike. The same with the poor people at the base of the cafe in Athens, why are they outside instead of just building a roof if the sun is the problem? Nothing really adds up, but at the same time, the narrative works anyway.