Ok, so, I’m being a little facetious myself to prove a point. We can’t just reset an entire system. That’s not how things work, barring natural and/or human-created disasters, because we are social creatures and we simply do better when we can rely on each other for help with tasks that are beyond our own individual abilities. Can such events happen? Absolutely. They happen all over the world on a daily basis. Would we be better off if we were prepared and maintained some of the skill sets necessary to do what you lay out? Again, absolutely.