AviraDeArah,
I think it’s not kefira to say that a human being can change or even destroy his house. And on a bigger scale, his block. Or neighborhood, or city, or even region. Fly across the expanse of the U.S. on an airplane and one can see that humans have drastically altered the entire countryside, with roads, cities, and farmland like patchwork quilts. At what point or scale do we say that the idea that humans can change their environment becomes kefira? I’m honestly curious where the boundary is.