When creating art one must maintain an awareness of how all components fit together to create a beautiful piece that works as a whole. It's important to know what you don't know even if you have no urgent need to learn those things. Anecdotally, figuring out what I enjoy learning (information theory, social systems) and my life goals (early retirement so I can study independently and spend more time with my family) have helped guide me into machine learning and entrepreneurship. Life's too short to learn everything!