Caleb in Divergent?

I just read this, and they really need to cast this kid. He is an amazing actor, and he'd do the role of Caleb justice. In fact, I was able to picture him in the other male leads, too. You might not think of him as Four by just looking at him, but I've seen him in other roles, and I thought, you know, he could actually play Four. And then I was thinking about Eric, and I thought the same thing--and yes, I know to look at him you wouldn't necessarily think..."Eric!" It's weird, but I think maybe I'll start to recognize him on sight, but it's happened 3 or 4 times where I'll see this actor in some role, and I'll go "wow, great actor! Who is this guy?" And I'll come here to look him up and go, oh--it's him! He really loses himself in his roles, and he actually looks different. That's why I think he could actually play any of those roles. I dunno. He must be method.