# Discursiveness (explanations)

From Learning

In the context of explanations, **discursiveness** refers to the extent to which an explanation references subjects outside the main topic at hand. This terminology is nonstandard (it's unclear what the standard terminology is, if there is any).

## Examples

- In decision theory, both "Timeless Decision Theory" and "Functional Decision Theory: A New Theory of Instrumental Rationality" describe a new logical decision theory. However, the former paper goes into discussions about free will, reductionism, and other more philosophical topics (section 13), while the latter paper is a straightforward description of the decision theory. In the terminology of this page, the former paper is more discursive.
- Both
*Gödel, Escher, Bach*and*Computability and Logic*discuss ideas like computability, recursion, first-order logic, and Gödel's incompleteness theorems. However, the former goes into digressions about art and music, history, fictional stories, and so on, while the latter is a straightforward tutorial through the math. In the terminology of this page, the former book is more discursive.