AEC Repeatability in Science Reproducibility side-choosing publish a refutation protocol how their claim can be refuted, in the sense of Popper. Side-choosing: author has chosen verifier side. opponent might choose falsifier side or be a verified supporter, i.e., choose the same side: force one, Need evaluation of debates. lab design for reproducibility structure: all the infra-structure for defending and potentially refuting the claim. claims with a large number of verified supporters represent the current state-of-the-art but are not necessarily true.