# Recognise the critical path

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• #132746

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Participant

If the critical path (which is the longest) is (ABCD)
(A )is the starting point
And (D) is the end

Assume that activity ( C ) Can not be completed until there is another activity (F) to be finished.

My question ( ABCD )is still will be the critical path even C can not be completed, correct?

In other words the critical path will not be effected if there is another activity should be finish , so the activity in the critical path be finish?

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• #132758

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Kevin Hock
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In any process, every activity must be completed for the process to be completed, so it would be expected that there may be other activities not on the critical path that feed into the critical path. The critical path is just the path with the longest completion time.

Kevin

#132759

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Participant

so the answer to my question below is correct?

( ABCD )is still will be the critical path even C can not be completed, correct?

#132760

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Kevin Hock
Participant

Yes, the critical path is the single longest path with the longest time to completion, regardless of how many other activities feed into it.

Think of it this way. While C cannot be completed if F is not completed, there can be some delay in F and it won’t affect the critical path, because activity F has slack time. Of course, if F is delayed more than the amount of the slack time in F then it will delay the process.

ANY activity, if delayed sufficiently, will cause the process to be delayed. The critical path is just the one path that has no slack time and cannot have any delays without delaying the completion of the process.

Kevin

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