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Extreme Programming Explained by Kent Beck

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Chapter 1. Risk: The Basic Problem

Software development fails to deliver, and fails to deliver value. This failure has huge economic and human impact. We need to find a new way to develop software.

The basic problem of software development is risk. Here are some examples of risk:

  • Schedule slips—the day for delivery comes, and you have to tell the customer that the software won't be ready for another six months.

  • Project canceled—after numerous slips, the project is canceled without ever going into production.

  • System goes sour—the software is successfully put into production, but after a couple of years the cost of making changes or the defect rate rises so much that the system must be replaced.

  • Defect rate—the software is put into production, but ...

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