Underdetermination

Underdetermination is a concept in epistemology and philosophy of science, which asserts that for any given body of evidence, there is always more than one theory that is consistent with that evidence. This means that the evidence does not determine a single theory, hence the term 'underdetermination'.

Overview

The concept of underdetermination is often associated with the work of Pierre Duhem and Willard Van Orman Quine. Duhem proposed the idea in the context of physics, suggesting that physical theories are not determined by empirical evidence, but by a set of auxiliary assumptions. Quine expanded on this idea, applying it to all of scientific knowledge.

Underdetermination poses a challenge to the scientific method, as it suggests that empirical evidence alone cannot determine the choice between competing theories. Instead, other factors such as aesthetic or moral values, practical considerations, or even personal biases may play a role in theory choice.

Types of Underdetermination

There are two main types of underdetermination: transient and permanent.

Transient underdetermination refers to situations where further evidence could potentially resolve the underdetermination. For example, two theories may make different predictions about the outcome of a future experiment. Once the experiment is conducted, the results could potentially determine which theory is correct.

Permanent underdetermination, on the other hand, refers to situations where no possible evidence could resolve the underdetermination. This could occur, for example, if two theories make the exact same predictions for all possible observations.

Implications

The implications of underdetermination are far-reaching, affecting not only the philosophy of science, but also areas such as ethics, law, and medicine. In medicine, for example, underdetermination can arise when different theories provide different interpretations of the same medical data, leading to different treatment recommendations.

See Also

• Confirmation holism
• Duhem–Quine thesis
• Scientific realism
• Scientific anti-realism