Planning and Scheduling - Stage 1
Conception bring us to a time before any recorded execution plan and schedule. It is the zero point in time where the fate of the project is most uncertain. From this origin comes initiation or Stage 1.
A feasibility study and a business case becomes the primary foundation of stage 1. It has to be strongly aligned to the business overall strategy. If it is not, it is best to kill the project before it takes further roots.