I think the point here is the metaphore. When you say "infrastructure" you think of bridges, roads etc. And for those you have a notion of possibility and diffi

I think the point here is the metaphore. When you say "infrastructure" you think of bridges, roads etc. And for those you have a notion of possibility and difficulty of repairing them. When he says "infrastructure" he means the nature that we draw on (to build our infrastructure) i.e. the weather, the trophic chains etc. I would doubt that everything from one type of infra can be translated to the other. E.g. when it comes to nature some things are simply almost irreversible, whereas there is no such thing for man-made infra.