Industrial Engineering and Production Management
Routing assists engineers in deciding in advance

The layout of factory facilities
The methods of proper utilization of manpower
The flow of material in the plant
The methods of proper utilization of machines

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Industrial Engineering and Production Management
The assumption in PERT is

A project will always be behind schedule, if left uncorrected
A project can be subdivided into a set of predictable, independent activities
Activities are fixed and can't be changed
Cost of project will always be more than the estimated cost, if no timely corrections are taken

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