The word incluing is attributed to fantasy and science fiction author Jo Walton .  She defined it as "the process of scattering information seamlessly through the text, as opposed to stopping the story to impart the information."  "Information dump" is the term given for overt exposition, which writers want to avoid.   In an idiot lecture , characters tell each other information that needs to be explained for the purpose of the audience, but of which the characters in-universe would already be aware.  Writers are advised to avoid writing dialogues beginning with "As you well know, Professor, a prime number is..."