John Gall (born 1925) is an American author and retired pediatrician. Gall is known for his 1975 book General systemantics : an essay on how systems work, and especially how they fail..., a critique of systems theory. One of the statements from this book has become known as Gall's law.
Gall started his studies in St. Johns College in Annapolis, Maryland. He received further medical training at George Washington University Medical School in Washington, and Yale College. Eventually early 1960s he took his pediatric training at the Mayo Clinic in Rochester, Minnesota.
In the 1960s Gall started as a practicing pediatrician in Ann Arbor, Michigan and became part of the faculty of the University of Michigan. In 2001 he retired after more than forty years of private practice. In the first decades of his practice he had also "conducted weekly seminars in Parenting Strategies for parents, prospective parents, medical students, nursing students, and other health care practitioners." Until 2001 he held the position of Clinical Associate Professor of Pediatrics at the University of Michigan. Since 1958 he has been Fellow of the American Academy of Pediatrics.
After he retired, Gall and his wife Carol A. Gall moved to Walker, Minnesota, where he continued writing and published seven more titles. He died in December 2014...
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