Abstract

In a previous paper it was proposed that theories of empirical phenomena should satisfy conditions of finite and irrevocable testability. Roughly speaking, a theory is finitely testable if, for every set of observations that falsifies the theory, there exists a finite subset of observations that falsifies it. A theory is irrevocably testable if, for any finite set of observations that falsifies the theory, any superset of observations that includes that set also falsifies it—a theory falsified by observations cannot be resuscitated by adding new observations to the original set.