From a question to a name.

In 1785, the philosopher Immanuel Kant proposed a simple test for any action: imagine the rule behind your choice becoming a law for everyone. If you couldn’t accept a world where everyone acted the same way, perhaps you shouldn’t act that way either.

Kant was thinking about honesty and fairness, about not making exceptions for ourselves. Two centuries later, his question has taken on a new meaning. On a planet of eight billion people, no habit is truly private: every everyday choice, multiplied, becomes a force that shapes the climate.

Universalizable puts Kant’s question into numbers. Pick an everyday action and see what it adds up to: for you, for your friends, for everyone.