analoga of alimentary fiber in the information domain Synapses? I was going to say optic nerve, till I remembered that we also get information from other than visual input. Let me see--as long as we're doing analogies, can we say that food that doesn't make it to our stomachs is nourishment? And similarly, if we receive some sort of input that is incomprehensible to us, does it become information only when we have some understanding of it?