Whoever is willing to help someone unknown he/she can expect to get help from another unknown person. This is the law of nature. And this way one human can establish faith in others that humanity still exists. But any type of economy can't explain this.

Somehow cultural economy is wrong too. because they can't think outside of friends & known people & their extreme nepotism occurs. For that reason, a cultural economy can't establish just in society. Might be there is someone (unknown) who deserves the best.