Example of positive symptoms of john Nash in a beautiful mind?

In "A Beautiful Mind," John Nash exhibits several positive symptoms of schizophrenia, including vivid hallucinations and delusions. He experiences intense visual and auditory hallucinations, such as interacting with imaginary characters like Charles, his college roommate, and government agents. These symptoms reflect his mind's ability to create intricate and engaging narratives, showcasing his extraordinary intellect and creativity, even as they distort his perception of reality. Ultimately, these experiences highlight the complexity of his character and the challenges he faces in navigating both his genius and his mental illness.