[1] including of course inventing the necessary physics, math, logic, and actually doing the engineering in addition to pulling off the mission. And, of course, dreaming of doing it.
Edit: If octopuses or dolphins or whatever animal people think is so clever is in fact so clever, then someone should prove it by teaching them some form of durable symbolic information storage system and teach them to teach other members of their species what they have learned. If they can't do that, then they're not even close to as smart as we are, full stop.