I agree, it amazes me how far you can regress down the rabbit hole of how closely tied we are all together. After the things you listed there's raw materials m

I agree, it amazes me how far you can regress down the rabbit hole of how closely tied we are all together. After the things you listed there's raw materials mining, power grid, education systems. If any one thing stopped, the whole system falls apart. It really is amazing what a bunch of barely evolved apes can accomplish when we work together across time, families, cultures, and nations.