On the other hand, I feel that tools like Unity are successful precisely because they let you tinker with your game in a WYSIWYG kind of way. It's really liberating to be able to work inside such a tight feedback loop, and it's a little weird to see a modern game engine distancing itself from that approach.

(But maybe I'm missing something. What exactly is the role of the Unreal Editor in UE4? Is it mostly for things like graphics and sound?)

EDIT: OK, so apparently UE4 has something called Blueprints. I'm still not exactly sure what they are, but people in the thread are saying that they're superior to C# in Unity, and that they can even allow you to make a game without knowing how to program. So why is Tim Sweeney saying that C++ is replacing UnrealScript for gameplay code?