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|Description=A core theory of a [[Discipline| discipline]] is a [[Theory| theory]] presupposed by the discipline's [[Core Question| core questions]].[[CiteRef::Patton and Al-Zayadi (2021)]] The [[Scientific Mosaic| scientific mosaic]] consists of [[Theory| theories]] and [[Question| questions]].{{[[CiteRef|::Barseghyan (2015)}}]][[CiteRef::Barseghyan (2018)]][[CiteRef::Rawleigh (2018)]][[CiteRef::Sebastien (2016)]] Questions constitute hierarchies where more specific questions are [[Subquestion| subquestions]] of broader questions. Within this hierarchy, certain general questions play a special role as core questions. These questions are essential to a discipline, and have the power to identify it and determine its boundaries. For example, a core question of evolutionary biology would be 'how did living species originate as a result of evolution?'. Questions always presuppose theories, which endow them with semantic content. Those presupposed by a discipline's core questions, are that discipline's core theories. For our example, the theory in question would be The neo-Darwinian theory of evolution by natural selection.