We didn't -- a lot of flying, a lot of experiments, a lot of things that didn't work, and ones that did work, and the plane kept getting a little better, a little better.
Beaucoup d'essais en vol, d'expériences, beaucoup de choses n'ont pas marché, mais certaines ont marché, et l'avion continuait à s'améliorer, encore et toujours.