Antonio Carzaniga, Professor, Faculty of Informatics, USI--Università della Svizzera italiana, SwitzerlandImagine a network in which you address information: literally, packet-level addressing of *information* rather than hosts. For example, you may request the front page of El País with a request packet addressed to "the front page of El País"! Then the network forwards the request to some server that can produce the right data (possibly cached) and then delivers that data back to you. You don't have to figure out where that information is; the network does that for you.
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