Making distinctions is like painting a room. It's the boundaries that need the most attention. My parents hired a professional to paint our garage every couple years. As a curious kid, I would pepper him with questions. "How do you get it smooth? Would it be faster with a sprayer? Who picked the color?" A few years later my mom gave me the job of painting the bathrooms. I then advanced to painting houses as a summer job in college. I’ve painted more walls, doors, and window frames than I care to remember.