We all have jobs. Whether it's work, being a parent, teaching Sunday School, coaching sports, we all have jobs. That's why I ask about jobs at depositions. One of my favorite deposition questions is "What qualifies you to do your job?" Most of the time, you will find that the person is at least marginally qualified to do the job that they are doing. But sometimes, they are not.
Check out the deposition clip of the safety director at a major manufacturer here in Wisconsin. My client, a delivery man, was hurt due to unsafe practices at the plant. This is one of Eric Oliver's favorite deposition clips. Watch the non-verbal aspects of the clip, they are almost better than the answers.
Remember, ask about jobs.