Be Have Do

BE defines essence.
HAS defines constitution.
DO defines behaviour under conditions.
WHY defines function (only in systems).

BE → Identity, Class, Category, Type
HAS → Parts, Properties, Attributes
DO → Behaviour (under conditions)
WHY → Function (Final Cause, system-level)

BE → Identity
HAS → Properties / Constituents
DO → Behaviour

ENTITY: Human

BE:

• Biological species
• Member of genus Homo

HAS:

• Characteristic biological traits (as a class)

DO:

• — not defined at class level —