Conceptual Horizon

There is an idea that I'm trying to flesh out. I call it Conceptual Horizon. The idea is that there are a certain number of things that you have some sense of. These things are within your horizon. Well, I think this boundary is a bit fuzzy. So there are some things you have firm grasp of. These are well within the boundary. Then there are things you have an increasingly less firm grasp of. These are closer to the boundary. One interesting aspect of this idea is that the things you might get a hold of in the future are near the current boundary. And, naturally, the things that will be hard for you are further away.