I must go with my gut (intuition) on this. For there must be an empty, untouchable, difference between one neuron and another (according to the manifest substance of any individual neuron), where chemical exchanges take place independent of either participating neuron, so that the transfer of chemicals is an INHERENT trade between one neuron and another.
It is about, technically speaking, the very difference, or the lack of any substantial connection between either neuron. Without that "empty" space my interest in the subject is useless, since it involves a philosophical viewpoint of the instantaneous translation of ANY CHEMICAL TRANSFER BETWEEN the two neurons into a status of experience within the consciousness of the person's brain. Liquid, for my expression of the neuronal behavior, is as insubstantial as empty space, since the liquid is NEUTRAL matter, not specific matter (flesh), and that, for me is grounds to imply an "empty" space and the expression of my first post as a basis for the philosophical implications of that inherent "difference" between two neurons, making the "empty space" implication a valid assessment of my observation of brain construction and the philosophical attributes that must be implied by that condition (emptiness).
It is, simply put, an inspiration of the basic construction of the brain, that ALLOWS for unknown and variable attributes to come into play DURING the chemical exchanges in neuronal activity. Why is it so hard to express the IMPLICATIONS of neuronal activity as a PHILOSOPHICAL tendency? I try, with what little technical knowledge that I have, to express the beauty of the brain's activity as a PHILOSOPHICAL attribute of its domain, being a vast translator of inherent properties (chemical exchanges) that interplay with vast chemical interactions within the domain of neuronal activity. I just love the IMPLICATIONS of each and every interchange of the brain's neuronal functions. Why the technical talk, dry and uninspired, when the actual interactions of the vast amount of neurons is so much more breathtaking to consider and appreciate?