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Managing Complex Projects by Kathleen B. Hass

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CHAPTER 3The Project Complexity Model

“Complexity, the poetry of what we know, and what we don’t.”

—GERALD MULENBURG, PhDSENIOR ANALYST, NASA AMES RESEARCH CENTER

“As we know,

There are knowns and unknowns.

There are known-knowns.

These are the things we know we know.

We also know there are known-unknowns.

That is to say, there are some things we know we do not know.

But there are also unknown-unknowns.

These are things that we don’t know we don’t know.”

—DONALD RUMSFELD, FORMER U.S. SECRETARY OF DEFENSE

Webster’s Encyclopedic Unabridged Dictionary tells us that complexity is characterized by a complicated or involved arrangement of many interconnected parts, units, etc., and that the situation is so complicated or intricate as to be hard ...

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