Second Eye
Since when are jungles of steel and concrete a goal to aim for??!! Maybe a few decades ago, but I don't think that's the plan anymore!! They're ugly!! The only benefit is how cheap and fast you can build with them!! You can build slightly higher building with them but there are more calculations there. I guess you can use steal in the building (which I think i he means) but steal and concrete contract and expand at different temperatures which cracks the concrete. So they still need maintenance just like most other building materials!! You could just use mud or bricks which wouldn't last much less and are much much better heat insulators. Also they look better than GREY building!!! Anyway it's not like they're building skyscrapers!
Saying that Anna is a genius is really a big overstatement. "smart" should be a better choice, since she didn't suggest the possibility of separating and purifyng gases, Roland did, with the glass trick. What she did was to deduce what could be the benefits of replicating what Roland had just done Also, the author keeps letting Roland assume a lot of things happened/developed as in his previous world, while this new one had, for exemple, magic?