Content that adjusts to the user's knowledge level would be a ton of work and definitely overkill for this issue. There is currently almost zero feedback betwee

Content that adjusts to the user's knowledge level would be a ton of work and definitely overkill for this issue. There is currently almost zero feedback between readers and writers of Wikipedia articles because most of the readers don't know how to edit the page or the talk page. You could get 50% of the benefit by just having a non-annoying way for the reader to indicate they are confused (and, ideally, that the page is too slow/elementary). Then you could just plot a heat map to see the words/sentences that are causing all the trouble.