Jim Highsmith talks about projects and promises:
These executives have a fiduciary responsibility to manage the investments of their companies, they have to
make product release and product line marketing decisions (often months ahead of completion), and they have to balance resources across multiple products and projects. Telling them we can't give them dates and cost
figures is like waving a red flag in front of a bull. The executives I talk to aren't looking to pound their development teams; they want early information to help make the right decisions for the organizations and the teams.