Human: Is it possible to build a robot that can walk on a beach without getting stuck in the sand? Assistant: 
Yes, it is possible to build a robot that can walk on a beach without getting stuck in the sand. There are many different types of robots available with varying degrees of complexity and functionality. Some robots use suction cups or other devices to help them move over uneven terrain such as sand. Other robots have treads or wheels that allow them to move across difficult surfaces more easily. Robots may also be equipped with additional sensors that allow them to detect objects in their environment and adjust their course accordingly.