Gantt charts - disadvantages

They can be too simplistic
They do not provide enough detailed information for complex projects
On a large project they can become so huge they are unmanageable
The time for each task must be estimated before the chart can be completed
Task dependencies can sometimes be hard to identify at the outset of a project
It is difficult to show where there is slack time in the project
Critical paths in the project might not be easily identifiable

 

 

 

 

 

 

 

 

 

 

 

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