When you as a project leader start a project, you will write down your best guess as to who should be on the core team. You may have to negotiate with other teams, identify alternatives, horse-trade resources, whatever. Remember, our rule of thumb is the core team should be able to speak capably to about 90 percent of the deliverables and risks the project will entail. Even without knowing exactly what the project will ultimately require, we find this provides a useful guide.
