>be hunter gatherer >look at mountain >"yeah it's beautiful" >starve >plant wheat instead of hunting and gathering >wheat works >too much wheat >need somewhere to put wheat >build granary >need someone to count wheat >invent writing >need someone to guard wheat >invent state >need someone to trade wheat >invent money >money works better than wheat >need somewhere to put money >build bank >bank lends money to guy with idea >guy builds mill by the river >mill needs 40 guys >40 guys move next to mill >40 guys need bread, beer, a church >bakery, tavern, church move next to 40 guys >another guy borrows for a second mill >mill town >mill town gets a port >port town >everyone within 200 miles hears there's money at the port >everyone within 200 miles shows up >run out space >can't build out >build up >more >skyscraper >civilizational loop compounds >order a private taxi for your burrito