In this profession, plenty of potential projects come across our tables that don't necessarily get built. The reasons vary: master planning concepts and priorities change, client project scope changes, budgets change, personal situations change....etc. But each of those unfinished projects still produce an experience for us that is valuable to us. They are not considered failed attempts. Rather, a project of a different kind that perhaps will see it's "built" end some time in the future. In the meantime, we have pretty sketches and 3-D models as a result.