We once read a book called "Feed" in high school - a ham fisted anti-capitalist book. Wherein citizens are 100% connected to an internet like service that only exists to sell them products. 90% of the class couldnt get it. Even when the teacher sat down and explained the entire plot of the book they still couldnt wrap their head around it.
Guy I replaced once asked me to proofread an email for him and I practically had to rewrite the entire thing, then he did it again and I gave up. I was like man they're gonna wonder why any e-mail you send on my day off is incomprehensible.