"And how soon would success have to happen?"

Was it better to be bold and risk failure, or to give money to a project that had a good chance of success? And how soon would success have to happen in order to count—five years? Ten? Was it better to be patient or impatient? On the one hand, social justice wasn’t the sort of thing that happened overnight; on the other hand, there had to be some point at which a program could be declared a failure and cut off, or there would be no accountability at all.
What Money Can Buy: Darren Walker and the Ford Foundation set out to conquer inequality, New Yorker, January 4, 2016