Final answer:
PERT is a project management tool that is justified as an effective control system because it helps in efficiently planning and controlling large projects by identifying critical paths and minimum completion times, similar to targeted and minimal disruptive environmental control measures.
Step-by-step explanation:
The Project Evaluation Review Technique (PERT) is a management tool used to plan, organize, and control large projects efficiently by identifying the minimum time needed to complete the entire project. It helps in establishing an effective control system by setting realistic timelines and identifying critical paths that involve tasks which will delay the project if they are not completed on time. This justification aligns with the concept of using ecologically based control measures in environmental management, where the emphasis is on minimizing the disruption to the ecosystem. Similarly, in project management, PERT focuses on executing a project with minimal setbacks.
By analyzing various project tasks, their durations, and interdependencies, PERT facilitates better resource allocation and risk management. If conventional methods for managing a project are not adequate, PERT can act as a 'last resort' to streamline complex workflows and ensure timely completion. When implemented, like targeted pesticide use, PERT minimizes the 'disruption' to project schedules by using resources and efforts where they are most effective.