The key benefit for the writer is that he or she can simultaneously write for multiple audiences with varying interests and reading skills.

With conventional writing, the author must select a target audience and then let that choice guide the level of detail and vocabulary with which to explain each idea. But when writing a knowledge tree, all detail is provided, and each reader chooses how far to climb up into the tree to explore each idea. To maximize accessibility, the author can express each idea in the lower levels of the tree using simple, common words, while exploiting the full power and vocabulary of the English language, including specialized technical jargon, in the higher levels. In this way, the writing is accessible to persons with limited vocabulary and reading skill, while also satisfying the more demanding requirements of other audiences.