Photo Credit: Flickr User ReRodIn reading Tom's excellent post on CIMA's new report on independent media development efforts, I was struck yet again by how little we know about the impact of media development assistance - and how little we know about what we know. For instance, it's commonly held that donors need to be able to understand the impact of their assistance, to make sure their dollars are being spent wisely and in the right place. But how should we determine this?