Human evolutionary history may beg to differ in that the nervous system has evolved to be optimal for processing input from the natural senses; but the mighty truth is it is all mere signals. With sufficiently biochemically sophisticated interfaces, and potentially medicine to ease the adaption, any signal source can become a sense. I must underline that a link between "a sense" and the neurvous system can be monodirectional but "should" be bi-directional; if we give a person a sense as the ability to percieve the traffic of an arbitary server, we will be humane and ALSO give them the eyelids to ignore and open their perception of the ports. Which parts of the brain are best for such interfacing? I believe the commonly spread understanding of the notion of a sense must be uncomplete; were one sense closed, there is no reason we could not put two senses in its place. I imagined sort of graph structure connecting senses but this intuition hide away partially, and I cannot elaborate it further now...