oh ok yeah sorry, well i revise my statement to say "we can
finally make that flying space plane with robotic arms"
the point being we wanted to make something that we envisioned to be a certain way before we even started.
i think the knowledge base for making devices all evolve separately, then when you combine all fields(structural engineering, aerospace engineering, rocket and propulsion engineering, electrical etc), you can make what you want! however every piece will demand requirements and the way each field meets the requirements of every other field is where all the cool details come from that can never be predicted with concept art. i had a space book from 1969 that had concept art for the space shuttle, and it looked the same with no details, because they hadn't been worked out yet. oh and there was like 6 of them building a space station with robot arms and hands(2 per shuttle!), and the shuttfles were numbered like there was 30 shuttles and they all fly around together.