  Moreover, even if one can find an appropriately nuanced sense in which the concept of matter is empirical while still allowing for an appropriate kind of necessity, questions can still be posed about the “new determinations” that are to be added to that concept in each chapter of the Metaphysical Foundations. For example, what is the justification for each specific determination that is added when one thinks of matter as having a quantity, a quality, etc.? Also, what is the relationship between each new determination of matter and the various claims that Kant makes in each chapter of the Metaphysical Foundations? In particular, when Kant explicitly invokes principles for constructing concepts belonging to the possibility of matter, is his idea that these principles are required insofar as they make experience of the relevant “new determination” of matter possible (so that Kant would be developing a transcendental argument in the Metaphysical Foundations similar in many respects to the Critique of Pure Reason)? Answers to these questions depend on how one interprets the arguments Kant develops throughout the Metaphysical Foundations.