It's a big universe out there, and there are other ways to leave the solar system. Several new destinations with new machines, technologies, and unique processes
Why does science take so much plastic? To get a mere 100 spm you would need over 20 green belts of bitmuten to get enough coal for all the plastic you need. Is this intentional?
I actually ended up shipping plastic from Neuman V, from recycling stuff produced from nanites. As a side comment, is pollution on Neuman V serves any purpose? If not I think it can be disabled to save some UPS.