I'm not as certain. They don't mention measuring thrust from when they replace the test article with an RF load (whatever that means), or when they reverse the test article. Then they end on this note: "Test results indicate that the RF resonant cavity thruster design, which is unique as an electric propulsion device, is producing a force that is not attributable to any classical electromagnetic phenomenon and therefore is potentially demonstrating an interaction with the quantum vacuum virtual plasma. Future test plans include independent verification and validation at other test facilities."
So that makes me think that maybe they just don't know why it works, so the modified one still works for the same unknown reason. Probably not though. Like they say, they need more tests.
So that makes me think that maybe they just don't know why it works, so the modified one still works for the same unknown reason. Probably not though. Like they say, they need more tests.