The importance of the early phases of a project
In the book, Project Management – a multidisciplinary approach, edited by Prof Herman Steyn, the importance of the early phases of a project is stressed, especially in Chapter 4.
Figure 4.3 on page 64 of the book illustrates this principle:
The same principle is also illustrated in Figure 4.2 of the 6th edition of the book Project Management for Engineering, Business and Technology by John M Nicholas of the Loyola University Chicago and Herman Steyn, illustrated below.
Dr. Marie-Louise Barry from the Ara Institute of Canterbury, New Zealand, utilized this figure to create a video that explains the concept in practical terms.