Is the idea of open development another vague, endlessly elastic term capturing what is merely a passing mood, a fad? The goal of this issue of Development Outreach is to strike a resounding No. We will define open development in a clear and robust manner
and we will show that, rather than being a passing fancy, the idea of open development actually captures an emerging paradigm shift in how development is being done. We are also going to show that this new paradigm will endure. Before we define what open development is, however, we need to understand what the vanishing development paradigm has been.