1. Preventing bugs is more important than finding bugs and fixed bugs are more important than reporters
2. We test continuously and as soon as possible, not at the end of product developing
3. The constant product learning and understanding is more important than checking and the test documentation
4. The Team responsibility for product quality: The work of the team as a whole is more important than the division into responsibility zones
5. We base the testing on the risk assessment, not at our desire
6. The feedback is important to constantly improving and correction the test strategy
7. We try to find the right balance between communication and action
8. The cost of testing should be taken into account in the overall assessment of the User Stories