Some thinkers take the view that, beginning with the work of Descartes, epistemology began to replace metaphysics as the most important area of philosophy.
In his epistemology, Plato maintains that our knowledge of universal concepts is a kind of recollection.
Epistemology: A Contemporary Introduction to the Theory of Knowledge. 2nd ed. Routledge Contemporary Introductions to Philosophy. By Robert Audi. New York: Routledge, 2003.
My conclusion dovetails with Fasold's conclusion, which is based on a quite different, more epistemological kind of argument.
It has been argued that because an object is epistemologically dependent on an observer, it is also physically dependent on that observer.
The more epistemologically interesting cases are those in which expertise is involved.