Final answer:
The personality of a child in U.S. Robot's Brain is beneficial for making it relatable and approachable. In the future, more robots with childlike personalities are expected to be developed.
Step-by-step explanation:
The benefit of U.S. Robot's Brain having the personality of a child is that it allows the robot to be more relatable and approachable for humans. A childlike personality can make the robot seem less intimidating and more trustworthy, which can foster positive interactions between humans and the robot.
In the future, it is likely that robots with childlike personalities will continue to be developed. This is because research has shown that people are more willing to accept and interact with robots that have human-like qualities. Additionally, childlike robots can be useful in various settings, such as education and healthcare, where they can engage and assist individuals more effectively.