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Agile Estimating and Planning by Mike Cohn

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Chapter 17. Buffering Plans for Uncertainty

“To be uncertain is to be uncomfortable, but to be certain is to be ridiculous.”

—Chinese proverb

One of the complaints I often hear about agile planning is that it doesn’t work well in some environments. Typically, the environments cited are ones in which:

• The project is planned far in advance.

• The project must meet a firm deadline and include a reasonably firm set of functionality.

• The project is contracted from one organization to another.

• Requirements are understood only at a very superficial level.

• The organization is uncomfortable allowing too much flexibility in schedules, even on projects that don’t need firm deadlines and deliverables.

Being able to create reliable plans in these ...

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