Fundamental and Derived Quantities
A widespread view in metaphysics holds that some properties, perfectly natural ones, have an elite status among properties. As part of a naturalistic approach to metaphysics, it is commonly presumed that science—in particular physics—will reveal which properties in fact play the role of these elite properties. Since properties in physics are often quantitative, this raises the question whether all quantities are elite properties, or whether there is a distinction between fundamental and non-fundamental quantities, with only the former being candidates for elite properties. In this chapter I investigate whether the distinction between base quantities and derived quantities found in systems of units can serve as a basis for distinguishing between fundamental and non-fundamental quantities. My conclusion is aporetic: it seems clear that not all quantities are equally fundamental, yet a general criterion for fundamentality (or non-fundamentality) based on physics alone remains elusive.