Completeness is a demanding standard that researchers are tempted to abandon

Evidence

A key feature of the Nussbaum concept is that she wants her conceptualization to be complete. When approaching concepts via definitions, a reasonable requirement is that the definition be relatively complete. This means that no important or essential component is left out. This is a nontrivial requirement. It is very tempting to give partial or minimal definitions. — Gary Goertz, Social Science Concepts and Measurement, 194

Categorization

• XREF: Sets up the later argument against ‘minimal’ concepts used widely in qualitative and quantitative research.