Question: What is the name of the 1981 international bestseller written by the co-presenter of an event organised by Northern Telecom in which Professor Nicholas Negroponte's 'trading places' idea was renamed the 'Negroponte Switch'? 
Sentence (from "Negroponte switch"): It was his idea that a better use of available communication resource would result if the information (such as phone calls) going through the cables was to go through the air, and that going through the air (such as TV programmes) was to be delivered via cables.
Relevant evidence: Yes