I suppose a bus is cheaper in maintenance than a train . <| sep |> I would love to be able to invent the so called ebutler , an artificial intelligence that monitors all the data sent to you . It filters out the data that could potentially be damaging and let ' s through the data that is sound and safe . So for instance no more spam messages , no abusive , hurting messages on twitter or facebook . I read about it in the books by Peter F . Hamilton . See this explanation EButlers are sophisticated software applications that are essentially less powerful R . I . s Restricted Intelligence . Almost every Commonwealth citizen with wetware inplants uses a personal EButler . EButlers can be customised for a variety of purposes , but most citzens use them for automated data searches , communication forwardinganswering , paying for services over the planetary networks and sending personal files securely . In addition to this , more sophisticated EButlers are shown that are essentially mental copies of the users mind which are vastly more advance than the standard software . Nigel Sheldon Owner of Compression Space Transport is probably in possession of the most advance wetware and EButler software , he is described as using it to essentially run the entire company at the subconscious level of his mind , leaving his conscious mind to enjoy life . Later in the books he uses this ability to merge his mind with the S . I . so that he can use the wormhole network as a weapon against the Primes . The EButlers eventually develop into the UShadow technology seen in the Void Trilogy , which are essentially a copy of the users mind that can act independently in the Unisphere .