The document discusses different types of projects based on the degree of uncertainty around the project objectives ("WHAT") and how to achieve them ("HOW"). It presents a matrix identifying four types of projects: Type 1 ("Painting by Numbers") where both WHAT and HOW are clear; Type 2 ("Quest") where WHAT is clear but HOW is uncertain; Type 3 ("Movie-Making") where HOW is clear but WHAT is uncertain; and Type 4 ("Fog") where both WHAT and HOW are unclear. It provides examples and characteristics of each type and discusses implications for project planning and management approaches.