A logical description of a scientific idea and the evidence for or against it. In everyday language, an argument usually means a verbal disagreement, but here we use another meaning of the term: a reasoned case for or against a particular viewpoint. Scientific arguments generally have a few basic components: What is the idea? If this idea were true, what would we expect to observe in a given situation? Is this expectation borne out? How does that reflect on the likelihood that the idea is accurate or inaccurate? To learn more, visit The logic of scientific arguments.