Depends on the cost. If someone can make a Mars Rover that costs 1% as much but lasts 10% as long, that's progress.
If the rover itself costs 1% as much, probably not. If the cost of the rover plus getting it to Mars is 1% as much, sure.
Depends on the cost. If someone can make a Mars Rover that costs 1% as much but lasts 10% as long, that's progress.