Interviews are not trustworthy and triply subjective. Two articles in the Feb. 11, 2016, issue of the New York Review of Books make these related points. Janet Malcolm, in her review of a biography of Ted Hughes, refers to interviews as “not evidence of the highest order of trustworthiness” and Diane Johnson, in reviewing Jean Stein’s West of Eden, “an oral history . . . shaped from interviews”, writes: “as history it is triply subjective, filtered through people’s self-deceptions as they tell their stories, the author’s biases in choosing which bits to print, and the reader’s biases in deciding wh[at] to believe. . . . results can seem closer to gossip than gospel, hardly definitive history.”
For more on the unreliability of interviews, see my post, Interviews of the Famous.