At the time of the profile, the 88-year-old documentarian was editing footage from the New York Public Library, and he had more than 150 hours to cut down to two or three. “While the technique is uncompromising, some of the observations are laugh-aloud funny – as when a telephone operator valiantly attempts to explain that unicorns don’t exist, or a picture librarian demonstrates a system of themed archiving with images of ‘dogs in action’. ‘Everything that I find is coincidental, but there’s nothing coincidental about the final film,’ explains Wiseman, who is not only the director and editor, but the sound recordist and producer.”