You're making the mistake of thinking that all fiction is entertainment. It's not. There's a reason humans are hard wired to share stories.
> Imo big bang, citizen kane, danielle Steel and chaucer are all somewhat equatable, because they are all fiction/entertainment.
It doesn't work that way. The medium has an impact on the formation and development of the brain itself.
I have not heard that before.
The medium a piece of art chooses is significant, yes, (and in a lot of cases the creator chooses the wrong medium, eg. there are plenty of computer games out there that really want to be films, they dont make use of the strengths of the medium and even fight against it.)
The rest, I dont agree with.
Imo big bang, citizen kane, danielle Steel and chaucer are all somewhat equatable, because they are all fiction/entertainment. Personally I'd rate something educational or non-fiction over fiction in any medium