Had to look this up: "Be conservative in what you do, be liberal in what you accept from others. The principle is also known as Postel's law, after Jon Postel,

Had to look this up: "Be conservative in what you do, be liberal in what you accept from others. The principle is also known as Postel's law, after Jon Postel, who wrote in an early specification of TCP" https://en.wikipedia.org/wiki/Robustness_principle https://en.wikipedia.org/wiki/Robustness_principle