Planning needs to be undertaken in a systematic manner, implying that it is a purpose-driven process, constantly concerned with priorities and constraints towards achieving the identified objectives. Throughout, there needs to be recognition of potential problems and their means of resolution, also of innovative features that may bring benefits to the project, as a result of identifying and resolving the problems. The project may depend on positive support from beyond the immediate project group, the Board for a private venture, a Committee or Local, National or International Legislature for a project with features affecting the public interest. The planning process needs therefore to take account of perceptions concerning the project and how these may be influenced by exposure to positive factual data. Misconceptions, once expressed, are often difficult to counter positively. Planning is undertaken in an iterative manner with periodical review of the objectives as their satisfaction becomes progressively clearer.