This essay extends the observations made in E. Johanna Hartelius’ The rhetoric of expertise about the nature of expertise in digital contexts. I argue that digital media introduce a scale of communication—many-to-many—that reshapes how the invention of knowledge occurs. By examining how knowledge production on Wikipedia occurs, I illustrate how many-to-many communication introduces a new model of “participatory expertise.” This model of participatory expertise challenges traditional information routines by elevating procedural expertise over subject matter expertise and opening up knowledge production (...) to the many. Additionally, by hosting multiperspectival conversations on Wikipedia, the participatory model of expertise introduces epistemic turbulence into traditionally tranquil encyclopedia culture. (shrink)

The article develops and justifies, on the basis of the epistemological argumentation theory, two central pieces of the theory of evaluative argumentation interpretation: 1. criteria for recognizing argument types and 2. rules for adding reasons to create ideal arguments. Ad 1: The criteria for identifying argument types are a selection of essential elements from the definitions of the respective argument types. Ad 2: After presenting the general principles for adding reasons (benevolence, authenticity, immanence, optimization), heuristics are proposed for finding missing (...) reasons, for deductive arguments, e.g., semantic tableaux are suggested. (shrink)