Funny Tech Term: Ninety-Ninety Rule

Funny Tech Term: Ninety-Ninety Rule

Today's Tech Term Tuesday Term is "Ninety-Ninety Rule".

"The first 90 percent of the code accounts for the first 90 percent of the development time. The remaining 10 percent of the code accounts for the other 90 percent of the development time."
— Tom Cargill, Bell Labs

This can easily happen if the requirements for the development keep changing.

EDIT for clarification: This adds up to 180%... This is the "funny" part of this funny tech term. It's often hard to estimate the duration for a project... and if not managed well can overrun easily.

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