Objects let us have deeper conversations about reality.
When you discuss a specific subject, you subconsciously reference part of a large internal map of what you know.
Other people can't see this map. It only exists in your head, and it's called your mental model.
When faced with a problem, you reference your mental model and try to organize the aspects and complexities of what you see into recognizable patterns. Your ongoing experience changes your mental model. This book is changing it right now.
We create objects like maps, diagrams, prototypes, and lists to share what we understand and perceive. Objects allow us to compare our mental models with each other.
These objects represent our ideas, actions, and insights. When we reference objects during a conversation, we can go deeper and be more specific than verbalizing alone.
As an example, it's much easier to teach someone about the inner-workings of a car engine with a picture, animation, diagram, or working model.