Spectacled tern Spectacled tern The spectacled tern ("Onychoprion lunatus"), also known as the grey-backed tern, is a seabird in the family Laridae. A close relative of the bridled and sooty terns (with which it is sometimes confused), the spectacled tern is less common than the other members of its genus and it has been studied less. The three species, along with the Aleutian tern were recently split into a new genus "Onychoprion" from "Sterna" (Bridge "et al.", 2005). They resemble the sooty tern but with a grey back instead of a black one. Their breast and underparts are white, and they have
Simple Rules: How to Thrive in a Complex World Simple Rules: How to Thrive in a Complex World Simple Rules: How to Thrive in a Complex World is a 2015 business strategy book co-authored by Donald N. Sull, a Senior Lecturer at the MIT Sloan School of Management, and Kathleen M. Eisenhardt, a Professor at the Stanford University School of Engineering. Sull and Eisenhardt suggest that a limited set of simple rules must be applied to solve specific problems in complex situations. This thesis, which emphasizes "short cut strategies", is the best way for businesses to solve problems. The book illustrates this with many case studies, ranging "from medical