Premise: Doyle's look at the audio-taping practices of 10 presidents is a valuable history and comparative survey (Ron Rosenbaum, the New York Times Book Review ). Doyle, a master of crackling prose (Richard R. Roberts, the Indianapolis Star ), provides insightful transcripts from key moments, such as the Cuban missile crisis and the final days of the Nixon administration.
Hypothesis: Doyle has studied the audio-taping practices of 10 presidents and has previous transcripts of reporting jobs that provide insight into the Cuban missile crisis and final days of Nixon administration. 
Label: entailment