Why do you use the word believe?, do you see it anywhere in my post ? There is a reason not, it is because the operation [O] in my example, or "encounter" as you say, is an operation that results in "knowledge", that is, 0.0 % belief is involved when we say that "a material being realizes a metaphysical entity". Belief would occur only in those material objects that do not realize a metaphysical object but instead realize an object outside the metaphysical (an object incorporeal, supernatural, transcendental).
Suppose the material being a red blood cell, and next to it a metaphysical entity called a O2 molecule. When the blood cell performs an operation on the molecule and via diffusion it moves across the cell membrane, after the encounter the blood cell does not believe it now forms a union with the molecule, it knows it. Such is my theory of knowledge as relates to material beings and their interaction with the metaphysically given. Here I suggest that knowledge as a concept is a characteristic of all material beings, not just neurons in living entities, whereas belief is so constrained. That is, while knowledge may be (or not) within neurons, belief must be.