Independent researchers repeatedly rediscover the same two-level conceptual structure.

Evidence

The power of the two-level framework comes out in how famous scholars have implicitly used this structure. It is quite clear that the two-level structure has been repeatedly and independently discovered and used (I have used it myself on several occasions, e.g., Goertz 2003 and Schenoni et al. 2020). By the end of the chapter we will have seen a march of famous social scientists who have used the framework. — Gary Goertz, Social Science Concepts and Measurement, 1522

Categorization

• XREF: Connects to the recurring ‘independent discovery’ pattern seen in the Kuhn-style and Black Marxism material on how theoretical frameworks emerge collectively rather than from single founders.