Slightly off-topic, but I have been thinking about this and related issues in light of recent questions.
When learning a new computer language, my expectation is that I need to read about 200–300 pages of documentation (hopefully a single document, but it might be all over the place). I usually just skim through some parts that I am not immediately interested in, but it is good to know about concepts that exist in the language and I can go back to them. This takes me a couple of days (I work through examples), but prevents a lot of confusion later on.
The current manual (without
devdocs) is about 120K words, roughly 200 pages with 600 words/page (lower range for textbooks and manuals, some go higher). If many people who read this are still confused about something, then the documentation clearly needs to be improved, or possibly the syntax/semantics need to be redesigned. However, my expectation is that confusion which arises before reading the documentation is an issue that needs to be remedied by the user, not the developers or the authors of the docs.