What’s your favorite math subject you learned in school, and why?

I went to art school and took a class called “liberal arts math” it was the only time in my life I felt like I knew what I was doing in a math class. And that’s coming from someone who’s been absolutely dogshit at math my whole life. It was the most basic math possible. And it was awesome. Only time I ever got above a C in a math class or felt like one of the smartest dudes in the math class.