Background: Two kinds of research logic prevail in scientific research: deductive research logic and inductive research logic. However, both fail in the field of evaluation, especially evaluation conducted in unfamiliar environments. Purpose: In this article I wish to suggest the application of a research logic--"abduction"--"the logic of discovery"--which is powerful and very effective in constructing and validating explanations of new phenomena ("evaluation" findings, in particular). Setting: The primary focus of the article is theoretic with a case example illustrating the practice of using the logic of discovery. Intervention: Not applicable. Research Design: Not applicable. Data Collection and Analysis: Not applicable. Findings: Not applicable. (Contains 1 footnote.)