Why not? Picking everything to pieces is exactly what those people (theoretical and practical scientists) who seem to have the most success in approximating truth do. These are the methods that best produce accurate predictions about the future and best produce designs for new technologies that actually work.
Beliefs are what we use to model how the world is and what the results of actions and experiments will be. Reality is what actually determines those results, regardless of what we might believe. Truth is then the set of beliefs about the world that accurately model reality. And I'll say it again, the scientists who spend decades picking things to pieces are the ones who end up with the most accurate beliefs. They find the most truth.
It's a correspondence definition. And actually I understand correspondence has been one of the most popular theories of truth since Plato and Aristotle, continuing to the present.
