However, there was a difference. Roger taught us a little further than what I learned in class, namely project failure and the time-cost trade-off. The project manager is required to reduce the expected completion time of a project to meet a deadline. In other words, the manager must complete the project earlier than the planned end date of the project. The project duration can be reduced by devoting more manpower to the project activities and allocating more resources, but the problem is that additional manpower and resources will increase the cost of the project. Thus, the project manager's decision must be based on an analysis of the trade-off between time and cost. However, project crashing is a method of shortening project duration by reducing the time of one or more activities on the critical path. It must be an activity on the critical path to have a real impact on the duration of the project. Drawing a network diagram is a good way to simplify the project relationship and find gaps on the critical path to compress the project duration. The decision to crash should only be made once all possible alternatives have been