IN: Fairport Convention are a British folk rock band. Formed in 1967, they are widely regarded as a key group in the English folk rock movement. Their seminal album Liege & Lief is considered to have launched the British folk rock movement, which provided a distinctively English identity to rock music and helped awaken much wider interest in traditional music in general. The band have drawn heavily on the Child Ballads, songs of the British Isles from the later medieval period until the 19th century.

In 1998, Dave Mattacks moved to the USA and Gerry Conway took over on drums and percussion. Fairport produced two more studio albums for Woodworm Records: The Wood and the Wire (2000) and XXXV (2002). Then for Over the Next Hill (2004) they established a new label: Matty Grooves Records. In this period the band toured extensively in the UK, Europe, Australasia, Europe, the USA and Canada, and staged a major fund raiser for Dave Swarbrick at the Birmingham Symphony Hall. In 1998, members of the band began their association with the Breton musician Alan Simon. Working in collaboration with numerous others, members of Fairport (predominantly Nicol and Leslie) have performed in and participated in the recordings of all Simon's rock operas, including the Excalibur trilogy (1998, 2007, 2010) and Anne de Bretagne (2008). 2007 was their fortieth anniversary year and they celebrated by releasing a new album, Sense of Occasion. They performed the whole of the Liege & Lief album live at Cropredy, since 2004 renamed Fairport's Cropredy Convention, featuring the 1969 line-up of Dave Swarbrick, Ashley Hutchings, Dave Mattacks, Simon Nicol and Richard Thompson, with singer-songwriter Chris While taking the place of Sandy Denny. Footage of the festival, although not the Liege and Lief performance, was released as part of a celebratory DVD. The band's first official YouTube video appeared in April 2008. Edited from footage shot for the DVD, the nine-minute mini-documentary includes interviews with Lulu, Jools Holland, Seth Lakeman, Mike Harding, Geoff Hughes and Frank Skinner. In 2011, the band released a new studio album Festival Bell, the first new album in four years. This was followed in 2012 by Babbacombe Lee Live Again recorded live during the 2011 tour revisiting the Babbacombe Lee album first issued in 1971. In 2012, the band also released By Popular Request, a reworking in the studio of a number of the most popular songs in the band's repertoire (as determined by a mysterious consultation and voting process conducted by the band with its fans). In January 2015, four years after their previous studio album of original material (Festival Bell), Fairport Convention released a new one entitled Myths and Heroes.
QUESTION: what have they been up to anything that stands out?
IN: Irving Fisher (February 27, 1867 - April 29, 1947) was an American economist, statistician, inventor, and Progressive social campaigner. He was one of the earliest American neoclassical economists, though his later work on debt deflation has been embraced by the Post-Keynesian school. Joseph Schumpeter described him as "the greatest economist the United States has ever produced", an assessment later repeated by James Tobin and Milton Friedman. Fisher made important contributions to utility theory and general equilibrium.

In 1898, Fisher was diagnosed with tuberculosis, the same disease that had killed his father. He spent three years in sanatoria, finally making a full recovery. That experience sparked in him a vocation as a health campaigner. He was one of the founders of the Life Extension Institute, under whose auspices he co-authored the bestselling book How to Live: Rules for Healthful Living Based on Modern Science, published in 1915. He advocated regular exercise and the avoidance of red meat, tobacco, and alcohol. In 1924, Fisher wrote an anti-smoking article for the Reader's Digest, which argued that "tobacco lowers the whole tone of the body and decreases its vital power and resistance ... [it] acts like a narcotic poison, like opium and like alcohol, though usually in a less degree". Fisher supported the legal prohibition of alcohol and wrote three booklets defending prohibition in the United States on grounds of public health and economic productivity. He also defended eugenics, serving in the scientific advisory board of the Eugenics Record Office and as first president of the American Eugenics Society. When his daughter Margaret was diagnosed with schizophrenia, Fisher had her treated at the New Jersey State Hospital at Trenton, whose director was the psychiatrist Henry Cotton. Cotton believed in a "focal sepsis" theory, according to which mental illness resulted from infectious material in the roots of teeth, bowel recesses, and other places in the body. Cotton also claimed that surgical removal of the infected tissue could alleviate the patient's mental disorder. At Trenton, Margaret Fisher had sections of her bowel and colon removed, which eventually resulted in her death. Irving Fisher nonetheless remained convinced of the validity of Dr. Cotton's treatment.
QUESTION:
who did he co-author the book with?