Understanding that everything is a machine. E.g. universe is a machine, a solar system is a machine with planets going around, orbiting on their paths systematically, the human is a sophisticated machine with many different organs work together, a tree is a machine, all matters and everything around us is machines. We can’t stop this machine or this system. We cannot stop the earth moving around the sun. Likewise, we cannot stop people moving from the countryside to the cities. It is a machine and a natural system.