A good project manager
Daniel Kaplan at Sleep Easy Software, a relatively new addition to my RSS service, but already one of my favourites:
In these PM to Dev communications, it is extremely important that the developers are told why they are being asked to work on these use cases. With that information in hand, they can suggest better ways of approaching the problem and have a better chance of reading between the lines correctly when they have to make a technical decision that the PM won’t be able to answer.