A design language is a standard way to communicate a set of concepts so that people don’t have to re-learn things over and over. They make roads easier to drive on, kitchen utensils easier to use, and technology more intuitive. Every time you tap on a button on a website and see the button change color to signal that you ‘clicked’ it, you’re interfacing with a design language. Design can bring clarity, intuition, and usability to these kinds of experiences. But more importantly, design is a lens with which we should make change in the world.