In what important respect does PERT differ from the critical path method?

1. PERT and the critical path method are closely related project management tools. 2. Both help managers identify critical tasks and judge how delays will affect production. 3. Both use diagrams to show how operations and production will flow. 4. The important difference lies in how each treats time. 5. The critical path method assumes the time needed to finish a task is known with certainty, so its diagram shows one number per activity. 6. PERT assigns three time estimates for each activity instead, which lets managers anticipate delays and potential problems and schedule accordingly. _Source: OpenStax Introduction to Business (CC BY 4.0), Ch 10 "Achieving World-Class Operations Management", section The Big Picture: Critical Path Method and PERT_