To further define the issue and reduce the range of his options, Robert can add factors that should be taken into account, constraints, and assumptions.
In project management, a constraint is any limitation that specifies a project's bounds; the scope, for instance, is the upper bound of what the project is expected to achieve. The triple constraint or the project management triangle refers to the three main project constraints of schedule, cost, and scope.
The specific objectives, deliverables, and tasks that establish a project's parameters make up its scope. The schedule (sometimes used more broadly as "time") outlines the timetable for the delivery of those components, including the ultimate completion date.
Cost (also referred to more broadly as resources) refers to both the financial cap on the resources that can be used for the project as well as the overall spending cap.
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