Question

This method is effectively used for planning scheduling and coordinating different activiteis and reviewing the progress in project buying

Answer 1

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Answer 2

Can you imagine starting a long car trip to an unfamiliar destination without a map or navigation system? You're pretty sure you have to make some turns here and there, but you have no idea when or where, or how long it will take to get there. You may arrive eventually, but you run the risk of getting lost, and feeling frustrated, along the way.