Although the two terms are sometimes used synonymously,[15] cognitive biology should not be confused with the biology of cognition in the sense that it is used by adherents to the Chilean School of Biology of Cognition.[16] Also known as the Santiago School, the biology of cognition is based on the work of Francisco Varela and Humberto Maturana,[17] who crafted the doctrine of autopoiesis. Their work began in 1970 while the first mention of cognitive biology by Brian Goodwin (discussed below) was in 1977 from a different perspective.[18]