Rational Powers in Action: Instrumental Rationality and Extended Agency

Human actions are pursued in pursuit of indeterminate ends over time, which requires a new theory of instrumental rationality that focuses on temporal duration and the indeterminacy of ends. Sergio Tenenbaum argues that theories of moment-by-moment preference maximization cannot capture the fundamental structure of our instrumentally rational capacities.

Format: Paperback / softback
Length: 272 pages
Publication date: 31 August 2023
Publisher: Oxford University Press

Human actions unfold over time, driven by ends that are not fully specified in advance. Rational Powers in Action presents a novel theory of instrumental rationality that centers on these defining features of the human condition. In contrast to many theories of rational agency that focus solely on instantaneous choices between sharply defined outcomes, this book argues that the deep structure of instrumental rationality can only be fully understood by examining how it governs the pursuit of long-term, indeterminate ends. These ends cannot be realized through a single momentary action and their content leaves partly open what counts as realizing the end.

Sergio Tenenbaum emphasizes the importance of considering temporal duration and the indeterminacy of ends in intentional action, even when explaining the rational governance of relatively simple actions. Theories of moment-by-moment preference maximization, or any understanding of instrumental rationality based solely on momentary mental items, fail to capture the fundamental essence of our instrumentally rational capacities.

Tenenbaum presents a new theory of instrumental rationality as rationality in action. He argues that our rational powers are not limited to momentary choices but extend to the pursuit of long-term goals and the management of complex situations. This theory recognizes the role of deliberation, planning, and the ability to adapt to changing circumstances as essential components of instrumental rationality.

Through his insightful analysis, Tenenbaum sheds light on the complexities of human behavior and offers a fresh perspective on the nature of rationality. Rational Powers in Action provides valuable insights into the mechanisms that drive human decision-making and offers a framework for understanding how we can navigate the challenges and opportunities of our lives with greater wisdom and effectiveness.

Weight: 346g
Dimension: 138 x 217 x 18 (mm)
ISBN-13: 9780198889564