water in the list. yeah the author tried to imply all the tech related to those (air, water, food, etc) by citing a few examples (pipes, AC...) eg. a microwave

water in the list. yeah the author tried to imply all the tech related to those (air, water, food, etc) by citing a few examples (pipes, AC...) eg. a microwave is an amazingly powerful tool. and pots/pans combined with fire and water? game over, other tech, game over vi vs emacs: I shall overlook your heresy! sign of cross vim > Gemini