I don't know - I think the point is that at Starship costs its cheaper and faster to shoot up a tractor to space than to test it in a vacuum chamber. Especially

I don't know - I think the point is that at Starship costs its cheaper and faster to shoot up a tractor to space than to test it in a vacuum chamber. Especially for longer term tests. NASA devices have to work right every time the first time. That is because they are not getting replaced in a decade if ever if they fail. With a launch cadence measured in days you can just shoot up a new one or 10.