Philosophers distinguish between declarative knowledge, which is conveyed in the sort of declarative sentences ordinarily found in an ordinary general encyclopedia, and procedural knowledge, or the knowledge of how to do things. A complete compendium of human knowledge, as an encyclopedia is supposed to be, ought to impart both kinds of knowledge insofar as mere words (and other online media) permit this. Thus, eventually, we will want articles not merely on the history of violins, the different violin makers, etc., but also on how to play the violin. Articles in the Family and Consumer Science category should explain to how to cook and clean, and give advice to families on childrearing. Articles about dogs will not merely explain the physiology and typology of our canine friends but also their care and feeding.