cf. that Calvin and Hobbes strip where Calvin asks his dad how they know what weight limit to put on bridge signs: https://www.gocomics.com/calvinandhobbes/1986

cf. that Calvin and Hobbes strip where Calvin asks his dad how they know what weight limit to put on bridge signs: https://www.gocomics.com/calvinandhobbes/1986/11/26 https://www.gocomics.com/calvinandhobbes/1986/11/26