The Pareto Principle says

roughly 80% of consequences come from 20% of causes (the “vital few”).

In my experience newbies can onboard 80% of what they need to know right now by accepting a few oversimplified claims. These claims are “useful lies” intended to steer the newbie in a productive direction. If/when the newbie develops their own knowledge the the oversimplifications should be discarded or at least reassessed.

My plan is to add a conversationally-toned Pareto Summary to the top of each article I work on. I am steadily renaming these TLDR summaries due to that popular expression.