I think he means the LLDB console. You can inspect anything, however deeply you want. Create new objects. Assign them to variables. Run code snippets against your existing state at the breakpoint. Learn new APIs interactively. Reduce the need to compile/run as often. It's the closest I can get to a Smalltalk Workspace/Transcript. I agree that the GUI debugger is limited, and after living in the console for some time, next to useless.