premise: Enrique Leff (born Mexico, 1946) is a Mexican economist, who defines himself today as an environmental sociologist and environmentalist. He has written 25 books and 180 articles on political ecology, environmental sociology, environmental economics, environmental epistemology and environmental education. He is regarded as one of the key environmental thinkers in Latin America.
hypothesis: Enrique Leff has published less than 200 articles.
reason: The context says that Enrique Leff has published 180 articles. 180 is 20 short of 200, so he has published less than 200 articles. The computer may be confused by the use of "less than"