Practical reasoning

Abstract

Practical reasoning concludes in an intention rather than an action, as the formation of an intention represents the limit of what reasoning alone can achieve. This process is correct when the propositional content of the agent’s states—specifically an intention toward an end and a belief about a means—forms a valid inference. Such reasoning tracks truth through a truth-making attitude, functioning in parallel to the truth-taking attitude of theoretical belief reasoning. Although practical reasoning is normatively guided, it is not reason-giving; an intention does not provide a reason for its own fulfillment or for the adoption of means. Instead, the relationship between an intended end and the means believed necessary is one of strict normative requirement. This distinction prevents “bootstrapping,” the erroneous idea that forming an intention creates a normative reason for action where none previously existed. While deductive logic governs cases involving necessary means, common instrumental reasoning involving non-necessary means cannot be adequately explained by normative belief-reasoning or decision theory. These models fail because they introduce external normative premises or general theories of goodness that are independent of the specific end. A positive account of instrumental reasoning must instead rely on an internal principle of the “best means” relative to the end itself, ensuring that the process remains possible even when the initial end is not objectively justified. – AI-generated abstract.