Dreams of flying often symbolize a sense of freedom, ambition, or a desire to rise above challenges. In your dream, flying and analyzing countries may suggest that you are currently exploring new ideas or perspectives in your waking life. The act of collecting "data" could represent a quest for knowledge, understanding, or a desire to make informed decisions about your life.

The imagery of the world looking like a marble indicates a broader view of life and a sense of detachment from everyday concerns. This can signify that you are gaining insight into the bigger picture of your life or your aspirations.

When you landed and found everyone you’ve ever known waiting for you, it may symbolize a longing for connection or support from those around you. It could reflect your feelings about relationships in your life and the importance of community and shared experiences.

Overall, this dream suggests a journey of self-discovery and the importance of relationships as you navigate through new ideas or experiences. Consider reflecting on what aspects of your life you are currently analyzing or seeking to understand better, and how the people in your life play a role in that journey.