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|Preamble=Various cases from the history of science indicate that there can be multiple types of [[Authority Delegation|authority delegation]]. For one, communities sometimes delegate authority over a certain topic to one expert (e.g. the art market delegating to the expertise of the Wildenstein Institute when looking to verify the authenticity of a Monet painting),[[CiteRef::Losielle Loiselle (2017)|pp. 43-44]] while at other times they delegate authority to more than one expert (e.g. Renoir authentication).[[CiteRef::Losielle Loiselle (2017)|pp. 47-49]] This means that we can distinguish between ''singular'' and ''multiple'' authority delegation. In addition, when a community delegates authority over a certain topic to more than one expert, this delegation can be such that the opinion of all experts are valued equally, or it can be such that the opinions of different experts are valued differently (e.g. Modigliani authentication).[[CiteRef::Losielle Loiselle (2017)|pp. 45-47]] Thus, multiple authority delegation can be either ''non-hierarchical'' or ''hierarchical''. All of these subtypes of authority delegation require definitions.