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Topics: Business Analysis/Requirements Management, Schedule Management
Dealing with uncertain dependencies
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The project team usually determines the dependency after measuring the risk and also trusting each team member’s assessment. Usually the amount of uncertainty varies, depending on how much the current project resembles previous similar projects. My understanding is that if the project team identifies the fact that there will be uncertainty, then it will help the team in creating realistic project schedules. So, how do you deal with uncertain dependencies?
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Anish -

Can you clarify what you mean by an uncertain dependency? Is it:

1. I don't know if two activities have a dependency or not?
2. I don't know what type of dependency it is - mandatory, discretionary, external?
3. I don't know what the dependency itself is - FS/SF/SS/FF, leads/lags?

If it is #1, the safest choice is to assume the dependency exists and validate that assumption. Till then, the potential that the assumption is wrong will be a risk.

With #2 and #3, again, the safest choice in the absence of information is to take the most conservative path, but log the assumptions made and validate them as soon as possible.

Kiron
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1 reply by Anish Abraham
Dec 06, 2017 2:49 PM
Anish Abraham
...
Kiron,
Dependency could be mandatory or external. Many times I may not be able to know the requirements until I face the real issues, like lack of resources or more tasks added during the project. In this case the initial estimate may no longer be valid. So, there is always an uncertainty especially in large scale projects. I hope you understood what I was talking about.
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Anish
I hope your are not mixing schedulling and risk together. As per as my understanding, you have to sequence the activities( During Sequence Activities) which will reveal the dependencies between the activities, whereas risk is uncertain events or happening which may effect negatively or positively on attaing at least one objectives of projects
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1 reply by Anish Abraham
Dec 06, 2017 2:54 PM
Anish Abraham
...
Thanks Mansoor for your feedback
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A dependency has no uncertainty in it. By definition of system and dependency.
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Dec 06, 2017 6:54 AM
Replying to Kiron Bondale
...
Anish -

Can you clarify what you mean by an uncertain dependency? Is it:

1. I don't know if two activities have a dependency or not?
2. I don't know what type of dependency it is - mandatory, discretionary, external?
3. I don't know what the dependency itself is - FS/SF/SS/FF, leads/lags?

If it is #1, the safest choice is to assume the dependency exists and validate that assumption. Till then, the potential that the assumption is wrong will be a risk.

With #2 and #3, again, the safest choice in the absence of information is to take the most conservative path, but log the assumptions made and validate them as soon as possible.

Kiron
Kiron,
Dependency could be mandatory or external. Many times I may not be able to know the requirements until I face the real issues, like lack of resources or more tasks added during the project. In this case the initial estimate may no longer be valid. So, there is always an uncertainty especially in large scale projects. I hope you understood what I was talking about.
...
1 reply by Kiron Bondale
Dec 06, 2017 3:42 PM
Kiron Bondale
...
Anish -

I'd echo Sergio's feedback - this is not what we think of as activity dependencies but rather uncertainty native to the project and assumptions that are made by the team and stakeholders - managing this is the heart of risk management.

Kiron
Network:1544



Dec 06, 2017 7:46 AM
Replying to Mansoor Mustafa
...
Anish
I hope your are not mixing schedulling and risk together. As per as my understanding, you have to sequence the activities( During Sequence Activities) which will reveal the dependencies between the activities, whereas risk is uncertain events or happening which may effect negatively or positively on attaing at least one objectives of projects
Thanks Mansoor for your feedback
Network:1654



Anish, your reply to Kiron (sorry Kiron for intervene) is about risk but not about dependencies uncertainty. What you stated is about risk on project which is general, not dependecy specifc.
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1 reply by Anish Abraham
Dec 06, 2017 4:10 PM
Anish Abraham
...
Thanks Sergio for clarifying this.
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Dec 06, 2017 2:49 PM
Replying to Anish Abraham
...
Kiron,
Dependency could be mandatory or external. Many times I may not be able to know the requirements until I face the real issues, like lack of resources or more tasks added during the project. In this case the initial estimate may no longer be valid. So, there is always an uncertainty especially in large scale projects. I hope you understood what I was talking about.
Anish -

I'd echo Sergio's feedback - this is not what we think of as activity dependencies but rather uncertainty native to the project and assumptions that are made by the team and stakeholders - managing this is the heart of risk management.

Kiron
...
1 reply by Anish Abraham
Dec 06, 2017 4:11 PM
Anish Abraham
...
Thanks Kiron and Sergio for your valuable feedback. I really appreciate it.
Network:1544



Dec 06, 2017 2:57 PM
Replying to Sergio Luis Conte
...
Anish, your reply to Kiron (sorry Kiron for intervene) is about risk but not about dependencies uncertainty. What you stated is about risk on project which is general, not dependecy specifc.
Thanks Sergio for clarifying this.
Network:1544



Dec 06, 2017 3:42 PM
Replying to Kiron Bondale
...
Anish -

I'd echo Sergio's feedback - this is not what we think of as activity dependencies but rather uncertainty native to the project and assumptions that are made by the team and stakeholders - managing this is the heart of risk management.

Kiron
Thanks Kiron and Sergio for your valuable feedback. I really appreciate it.

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