I guess it&#x27;s like Hilary and Tenzing being the first to climb Everest, and then someone else (can&#x27;t remember who it was) coming along and doing it without supplementary oxygen. Just because that was <i>harder</i> doesn&#x27;t detract from the fact that Hilary and Tenzing were <i>first</i> and anyone else is just joining the ever-growing club of Everest summiters.<p>Now, if you want to invent an extra category of &#x27;first VTOL landing for a first stage booster for an orbital rocket system that uses boost-back to change trajectory mid-course&#x27; or similar, they SpaceX are first with that, and of course it&#x27;s an awesome achievement.