A concept can mix necessity and substitutability across its dimensions.

Evidence

In this chapter I focus on hybrids that combine logical AND with logical OR, or using linear algebra, that combine addition and multiplication. This is perhaps the simplest kind of hybrid. It uses aggregation classes to define structural hybridity. For the purposes of this chapter structural hybridity uses two or more different aggregation strategies. The canonical example will be using logical ANDs and ORs at the same level in the basic framework. — Gary Goertz, Social Science Concepts and Measurement, 1087

Categorization

• DEFINE: Defines ‘structural hybridity’ as combining two or more aggregation strategies within one concept.
• XREF: connects to: In cultural study, arbitrariness means another choice could serve equally. — W. David Marx, Status and Culture: How Our Desire for…, 115