1. Every time product requirements change, you hear a tree fall in the forest in order to support the printing of a new multi-page gantt chart;
2. The project managers comes into the office early in the morning so he can carefully prepare the specific tasks to assign to each team member;
3. Although sitting within 20 feet of each other, your team members proudly sit in closed offices and only communicate via email;
4. Your business analyst is pleased to show you that she managed to fit each user story on 42 50 index cards;
5. The last time a business representative attended your requirement gathering meeting, she was using a Palm Pilot;
6. As per the project plan, the Champagne has been opened to celebrate the launch of the project while half the development team is busy trying to do code integration;
7. While no team members attended, the management team is pleased with the content of the discussions that took place during the end of release post-mortem (retrospection);
8. The architects have locked themselves up for 6 to 8 weeks in order to properly prepare for the upcoming project;
9. The business representative is waiting for her administrative assistant to arrive in order to take notes from the daily stand up meeting;
10. A project control officer has been assigned to the project to ensure each steps have been properly documented and successfully executed.

Do you have other reasons to doubt?