Interesting. I just checked, and Brook's The Mythical Man Month makes 5:1 and 10:1 claims (The Surgical Team, first page) and also cites the Sackman, Erikson, a

Interesting. I just checked, and Brook's The Mythical Man Month makes 5:1 and 10:1 claims (The Surgical Team, first page) and also cites the Sackman, Erikson, and Grant study.