“The Hollywood film score composer could rattle off facts about chess puzzles, Immanuel Kant’s synthetic a priori knowledge and other esoteric subjects. He could go down philosophical rabbit holes and regale friends and family members with anecdotes about David Hume. His friends playfully referred to him as “Useless Information Man.”
In 2021, when one of his friends suggested that Frizzell get evaluated for autism, he decided he had nothing to lose. Several weeks later, a positive diagnosis provided an answer to the question with which he had wrestled for years.”
https://www.cnn.com/2024/05/09/health/adult-autism-diagnosis-wellness/index.html