All it takes to get to, say, Alaric I of the Visigoths, is either Rome or Italy -- sufficiently broad subjects that it's easy to get there.
The ability to remember Alaric I of the Visigoths through Rome of Italy because of a connection between the two could be linked through axons from nerve to nerve, and recalling the memory sets of an output fired along to the synapse?
The two memories are connected in actuality, so what if every neuron was connected to every other neuron? What kind of perception or cognition could that trigger? 4D perception?, because that is essentially 3 sides to an equation; being that perception is not just in opposites connected so as to have a hollow cube(imagine the vertices as opposites). But that the superpositions of perception are connected to each other,any point in the middle of the line, representing connections between neurons, making the cube fill completely, like a cramped brain, lol.
But I think that how knowledge works is through cognating relations between instances and there are rules to help, otherwise our processing speed couldn't process every connection.
There must be limits, like opposites causing the connection. But is it knowledge in nature that is in itself just opposites or the way we perceive and process it that limits our perception against superpositions.