Logic Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.Anti-spam check. Do not fill this in! ===Definitory and strategic rules=== The main focus of most logicians is to study the criteria according to which an argument is correct or incorrect. A fallacy is committed if these criteria are violated. In the case of formal logic, they are known as ''rules of inference''.{{sfn|Hintikka|Sandu|2006|p=20}} They are definitory rules, which determine whether an inference is correct or which inferences are allowed. Definitory rules contrast with strategic rules. Strategic rules specify which inferential moves are necessary to reach a given conclusion based on a set of premises. This distinction does not just apply to logic but also to games. In [[chess]], for example, the definitory rules dictate that [[Bishop (chess)|bishops]] may only move diagonally. The strategic rules, on the other hand, describe how the allowed moves may be used to win a game, for instance, by controlling the center and by defending one's [[King (chess)|king]].{{sfnm|1a1=Hintikka|1a2=Sandu|1y=2006|1p=20|2a1=Pedemonte|2y=2018|2pp=1β17|3a1=Hintikka|3y=2023}} It has been argued that logicians should give more emphasis to strategic rules since they are highly relevant for effective reasoning.{{sfn|Hintikka|Sandu|2006|p=20}} Summary: Please note that all contributions to Christianpedia may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here. You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see Christianpedia:Copyrights for details). Do not submit copyrighted work without permission! Cancel Editing help (opens in new window) Discuss this page