Final answer:
The specific project requirements of a vision and scope document should never be reused from project to project, as each project has unique needs and goals that require careful documentation.
Step-by-step explanation:
The element of a vision and scope document that should not be reused from project to project is the specific project requirements. Each project has unique needs, goals, and constraints, so reusing detailed requirement specifications from one project in another can lead to inappropriate solutions, scope creep, or project failure. The vision and scope document typically contains sections such as the problem statement, project objectives, business needs, project scope, limitations, and acceptance criteria. These sections, except for project-specific requirements, can sometimes be templated to some degree, but each project will have distinct specifics that must be thoroughly assessed and documented to ensure the project's success. For example, two software development projects might have similar business needs, such as improving user experience, but the specific functional requirements, user stories, and acceptance criteria must be tailored to the unique end-users, business processes, and technical environments involved. Using a 'one size fits all' approach to these elements can result in a product that does not meet the nuanced needs of the project stakeholders.