No Definitive Formulation

No Stopping Rule

Solutions Are Not True-or-False

No Immediate and No Ultimate Test

Every Solution is a 'One-Shot Operation'

No Enumerable (or Exhaustively Describable) Set of Potential Solutions

Every Wicked Problem is Essentially Unique

Every Wicked Problem Can Be Considered to Be a Symptom of Another Problem

The Existence of a Discrepancy Representing a Wicked Problem Can Be Explained in Numerous Ways

The Planner Has No Right to Be Wrong