Another topic that is linked to the disparity between Roochnik and Curd is the broader implications for the selection of any text book for any class. It seems that most any text book, given certain subject matter, presents information from the standpoint of the author. While some take greater care than others to present an unbiased or objective position, to some extent it seems inevitable that the author’s opinion is represented in the material.
This bias seems to depend extensively on the material. In mathematics, it is harder, or perhaps impossible to present a biased or non-objective take on a proof or some concept. It is inherently checkable and objectively right or wrong. This seems to also be the case for many sciences. However, there definitely are subjective judgments within these fields. For example in physics, there is some debate about the viability of string theory or a theory of everything, as has been proposed. It seems possible that an author could promote either position based on their subjective opinion. However, even here there is some standard, be it internal coherence, predictive power, or scientific rigor, etc. This kind of objectivity is not available in much of the humanities, philosophy included. Here there can be several viable interpretations, outlooks, etc. for historical philosophical thought. As is the case with Roochnik, we can view ancient philosophy as a dialectical progression, or perhaps simply as a series of unrelated, or non-progressive thinkers.
Given this variability, it seems absolutely necessary that any student or reader approach every text critically and cautiously, especially when first being exposed to the material. Indeed, it is easy to read Roochnik’s interpretation and then read the fragments and find his interpretation. It is another to read the fragments and original material, collect one’s own opinions and then temper those against Roochnik’s.
This critical approach seems to be necessary in many other fields, not simply philosophy. In Economics for example, there are countless “summarizations” and “formulations” of the thought of Keynes, Adam Smith, or even Marx. In each, there seems to be a bias that skews the original material, whether to fit certain circumstances or the authors own opinion. In either case, the original material is important because it allows us to explore what was actually said, rather than what someone tells us was said.
It is interesting to think about the way we have been exposed to ideas, particularly new ideas with which we are novices. Usually we rely on someone, whether a professor, teacher, or author who has more experience in the given field, to guide our exploration of the material. It is important to realize that these people have their own incentives, opinions, and interpretations vis-à-vis what they are presenting, and that we should have the intellectual courage to branch out on our own, read the original material, and not be afraid to formulate an interpretation at odds with what we have been exposed to.