The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.
I think what makes a good actor's director is the same thing that makes a good director. Acting is just one of the trades necessary to make a movie.
Aid can work where there is good governance, and usually fails where governments are unable or unwilling to commit aid to improve the lives of their people.

