I could have benefited from an unhurried, contemplative learning about science in elementary school. The primary concern approach with example and counter example even seems fun. The "heavy boots" problem of focusing on what is not the primary concern is a problem in understanding other issues like in politics. In politics though people have a self interested agenda and will warp reality to make it fit like having the earth the center of the galaxy. People should strive in political learning to use the first principle approach of the article, like eliminate oppression, and unbiasedly apply it universally.