Gnatt chart are used in capstone for the development of a potential medical device. We have certain tasks that are place on the critical path which must be done in order complete either the project as a whole or to move on with next task. As stated it can be a Start-Start, Start-Finish, Finish- Start, Finish-Finish tasks that are categorized for the various tasks as Dr. Simon stated. But in terms of Medical Devices one may see DDP, DID, DSD as perquisite before starting a project which can be the critical paths. Following that can FDA approve which can be used as a task then, Clinical trials etc…