What Would Be Your Specialist Subject?

If CGP Grey was on mastermind, what would his specialist subject be? If you had to go on this quiz show and be quizzed in front of a national audience. What's the subject you'd choose as one that you think when the researchers pulled their questions together, you'd hold your own)? I got to go with current events and pop culture. That would be my specialist subjects. Sports ball between the year 1980 and 2000. Besides that, I'll be this. The more specialized you get, the more they throw it incredibly hard questions at you. So you should be like, my specialist subject is general knowledge.