People make stuff. A lot of it. By one account, we’ve made more stuff than there is stuff in nature. Let’s assume this is true; it probably is. What stuff have we made? Well, we made roads, buildings, machines and such. What has nature made? Through evolution, nature has trees, elephants and amoeba. Our stuff, for the most part, needs humans to maintain it and to get value from it. Nature on the other hand has effectively created autonomous beings that fend for themselves.
Where is the future leading? The trends indicate that the quantity of human stuff continues to increase by about 30Gt per year. All this stuff needs human effort to maintain usefulness. In contrast, the amount of natural stuff has remained somewhat the same for a very long time. Exceptions are for global catastrophes such as asteroid strikes, massive volcanic eruptions and climate change. However as Homo sapiens take over, we replace nature with human stuff. Thus, the future necessitates increasing human effort, energy, to sustain stuff.
Nature continued over billions of years. Changes occurred such as the extinction of dinosaurs and the expansion of mammals. Will the future see the same for human stuff? Will it remain useful after global catastrophes? And will people leave enough natural stuff to sustain the future?