At the risk of violating a trademark, I can only say, heh:

NASA’s various attempts to develop new space transports, particularly fully reusable launch vehicles, in the past decade or so have not been successful. However, rather than revealing poor planning and management, NASA said those failures proved that RLVs were not feasible with current technology. So if the CEV program collapses due to overruns colliding with a no-growth budget, I guess that will prove that capsules on expendables are not feasible with current technology.