It is funny, as the metal 3D printer I've been working on is designed to handle printing/repairing large girder structures. Making things work in vacuum is an interesting design challenge, but also opens a lot of design possibilities for arbitrary structures that can't launch on cargo rockets.

People are often too judgmental these days, and youth must make their own decisions about the world they want to live in.

If you know the history of how JPL started, than you can probably guess it is the "odd" ones that tend to change science for the better. =3