In hindsight, one may call it a historic accident that in the 1970s mathematical economists and statisticians were assembled to address problems of development.
Professional scientists, even mathematicians and professional statisticians, can be fooled by even some simple methods, even if they are careful to check everything.
Researchers, statisticians and writers (e.g. medical writers or technical writers) become "ghost authors" when they meet authorship criteria but are not named as an author.
