premise: Sven Hostrup Hansell (23 October 1934 – 6 March 2014) was an American musicologist and Professor Emeritus of Musicology at the University of Iowa. He was a specialist in the music and performance practices of the 17th and 18th centuries, as well as a harpsichordist and composer.
hypothesis: Hansell was 23 when he died on 6 March 2014.
reason: Hansell was 79 when he died. The system probably tripped on the math.