Wikipedia:Coherence and cohesion

Coherence and cohesion are dimensions within overall article development that deal with how text and other information is organized and structured within an article and how different articles are organized and linked to form a more complete picture – concepts that we will be dealing with more and more as new article creation slows down due to our approaching a theoretical concept limit. With over 5 M articles as of November 2015, there are fewer missing articles to write in many areas (although gender bias in Wikipedia and racial bias in Wikipedia have left significant gaps in topics pertaining to women and people of colour). This means that in many subject areas, our editing work will take a greater focus on developing existing articles and topics to their maximum depth and ensuring that existing articles are well-linked and connected together through the use of wikilinks, categories, topicboxes, "see also" sections and other techniques.

There are areas which are well developed: Well formed articles are considered such largely because they deal with and link to the most relevant superordinate (contexts) and subordinate topics (concepts) in a logical order. The liberal usage of topicboxes is a necessity for large series of articles to be coherently navigable and developed.

Coherency refers to an article providing logical, understandable and usable knowledge to the reader. In order to be coherent,

Coherency is not about truth and verification. Coherency is about understandability, clarity and logic. If there is neither too much nor too little information, and the explanation is simple and clear, instead of overflowing with irrelevant details, then the article is coherent!