"An interface can be a powerful narrative device. And as we collect more and more personally and socially relevant data, we have an opportunity, and maybe even an obligation, to maintain [our] humanity and tell some amazing stories.” (Aaron Koblin)

An interface might resemble most what an event is like. So, it might be a better way of representing knowledge than linear words. A few theories can support this: Bruner's 3-modes of representing knowledge, Gagne's learning outcome taxonomy

"The Johnny Cash Project" provides an platform for people's inputs to an collaborative project. Like the channels of working, 这是一个分配的平台：给每个人"一个相对小而容易"的任务。你添一砖，我添一瓦。我在此时添一砖，在彼时添一砖。我添的砖能邀请（/激发）你添一瓦，也能激发我自己。问与答是激发的机制，更细化的问答渠道能激发更 Specific 种类的。

Often more specific questions are more effective than general questions. It is like providing an aid (scaffold) for people's answering. Knowledge Forum is about providing cognitive scaffolding, to facilitate cognitive processes. More specific questions type can play similiar role. Smart-Ana is designed partly based on this principle.