New York was something like a circus performer walking a tightrope an juggling at the same time....It could barely maintain its position, but an movement would tip the whole balance.
I try to build the things so that they're fairly indestructible. I've learned from my mistakes and some of those units, even if human life disappears from the planet, will still be recognizable a thousand years from now abandoned somewhere in the woods.
Obviously technologies that are sustainable are a logical first step to creating a just society, one that doesn't trample life in all its forms, whether it's other humans or other life forms on the earth, one that acknowledges that we're all sharing the space and that there needs to be room for every living thing somewhere.