Developers prefer to use agile methods. Mangagers prefer to use heavy methods.
- Anonymous - 2000 IT mangaers: 67% agreed
 
For now, we really need to learn to be like doctors. They are able to say, quite comfortably and confidently and with conviction, "These things are never certain." Doctors seldom if ever state with certainty what the outcome of any procedure might be. Yet software managers, operating in a far less disciplined and less data-driven environment... blithely promise features, dates, and outcomes not especially susceptible to prediction.
- Jim McCarthy, Dynamics of Software Development by Jim McCarthy, Denis Gilbert , ISBN: 1556158238