You don't know it for a fact. You trust them to not do it.
Yes, let's try again, how do you know you can trust anybody to do anything?
Do you hold a gun to their head? Do you trust the courts to uphold written agreements/contracts that dictate the other party's behavior? Do you observe their past behavior and use that to guess future behavior?
In 99% of our daily actions, we use the last option, and right now is no exception.
Yes, let's try again, how do you know you can trust anybody to do anything?
Do you hold a gun to their head? Do you trust the courts to uphold written agreements/contracts that dictate the other party's behavior? Do you observe their past behavior and use that to guess future behavior?
In 99% of our daily actions, we use the last option, and right now is no exception.