Design a time machine.

Focus on the user experience and the core functionality of the time machine. Consider who the target users are and what their motivations for using a time machine might be. Think about the design elements that would make the time machine intuitive and accessible, such as controls, safety features, and user interface. Additionally, address the implications of time travel, including potential ethical concerns and how users might interact with different time periods. Be prepared to discuss the technical feasibility and any limitations your design might have.