Organizing for Software Testing

Why is there an inherent conflict of interest in a software team? Here is an hint!

There's a natural conflict between testers and programmers because of the difference in perspective each role has. In the simple view, programmers are centered on creation: they make things that didn't exist before. Like most creators, programmers have a natural optimism about making new things and solving problems. From How to End Wars Between Testers and Programmers