Question: Can a person make a promise with the intention of breaking it later?
Proposed rule: “I may make promises with the intention of later breaking
them.”
The person in trouble wants his promise to be believed so he can get what he
needs.
Universalize rule: Everyone may make & break promises
Everyone breaking promises would make promises unbelievable, contradicting
desire to have promise believed
The rule is flawed. The answer is “No.”