A little at a time
So far, I have assumed that a project is treated as one cohesive lump. In practice, you will want to try to break it into smaller units. The results of each stage will signal a go-no-go for the next one. For example, if you are trying to build a better mousetrap, you might treat it as several, smaller projects – a board, spring, a hinged-wire, etc. If you build a prototype board and it passes inspection, you go on to the next project – the spring. If that fails, you can still sell small cheese boards. If you assign a probability of success to each stage, you can work out the overall chance of succeeding before you start – I will return to this intriguing thought in Chapter 23.
Project planning software, ...