The Startup
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The Startup

Why Is Software Always Ninety Percent Done?

It’s one of the great mysteries of information technology.

A series of thermometers showing 30, 50, 70, 90, 90, 90
Graphic by Author

“Hey, Phil, how are you coming on that subsystem?”

“Pretty good. I’m about 90 percent done.”

“Oh. Weren’t you 90 percent done a couple of weeks ago?”

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