The history of the field often gives more to think about than the modern state of the field.

Maybe more to think, but less value to the mastery the field, at least in the natural sciences (philosophy isn't one). You can safely delay learning about the history of discovery of electromagnetism, or linear algebra, or the periodic table until after you master the concepts. Apparently in philosophy it's somehow the other way around, you have to learn the whole history first. What a drag.