Full Idea
Essential properties by nature occur in clusters or packages.
Gist of Idea
Essential properties by nature occur in clusters or packages
Source
Crawford L. Elder (Real Natures and Familiar Objects [2004], 2.2)
Book Reference
Elder,Crawford L.: 'Real Natures and Familiar Objects' [MIT 2004], p.25
A Reaction
Elder proposes this as his test for the essentialness of a property - his Test of Flanking Uniformities. A nice idea.