Extreme Programmers work together in pairs and as a group, with simple design and obsessively tested code, improving the design continually to keep it always just right for the current needs.

• 极端编程者通过成对和小组的方式共同工作，通过简单设计和强制测试的代码，不断的提升设计以保证设计总是适合当前的需求。