Final answer:
The statement is true; use cases are a visual tool used in system design to show how various users interact with a system, providing a clear understanding of the system's functionalities at a glance.
Step-by-step explanation:
The statement 'Use cases are visual so you can see multiple things at a glance' is true. Use cases are indeed a visual diagram in the field of software engineering and systems design. They are used to describe the behavior of a system from an external point of view, capturing the types of interactions users (actors) have with a system to achieve a goal. Use cases help to specify the expected behavior (what), and not the exact method of making it happen (how).
Use cases are a part of UML (Unified Modeling Language), and they provide a way to capture user requirements in a visual format, which helps in understanding the complex functionality of a system. They are beneficial because they help stakeholders, including team members and clients, to see at a glance how different actors interact with the system to attain their individual goals, thereby offering a clear projection of what the system is intended to do.