Recently, when I was thinking about the priorities of a project I’m working on, I used as a source of inspiration the Maslow’s hierarchy of needs. This hierarchy is usually depicted as a pyramid, as you can see in the image below. According to this theory, human beings have some basic needs that must be addressed before anything else. I believe that this is true also in the case of a project: we must be able to identify which requirements are absolutely necessary, and which ones may wait until the basic needs were satisfied.