Timeless or Time-Bound

Something one has to decide when writing a book, designing a circuit, and even preaching a sermon, is whether to be timeless or time-bound -- time-bound in the sense of being attached to a certain moment or era in time. If one is time-bound -- and time-bound to the present -- one's work may be dated within so many years. My new metaphysics is intended to be timeless. For this, I am drawing on some of my memories of a pre-modern culture I experienced in my youth, for analogies. For instance, I describe the baking of fish, to illustrate a core aspect of the philosophy of mathematics. Now I remember how they baked fish in a pre-modern society, but I find it nowhere on the Internet (in order to check my memory). I remember my parents' amazement at the time. OBSERVATION: Here's a tip for staying out of trouble as a minister: in your sermons, refer only to events and issues which are time-bound to the first century AD. For instance, "Paul's view of things was X. Paul's actions were Y." (I do not use that method). My new metaphysics has the curious working title This Town is Tidy.