Best examples come from medicine. There are many drugs that work, but we don't understand how they work. For example: https://en.wikipedia.org/wiki/Category:Dru

Best examples come from medicine. There are many drugs that work, but we don't understand how they work. For example: https://en.wikipedia.org/wiki/Category:Drugs_with_unknown_mechanisms_of_action https://en.wikipedia.org/wiki/Category:Drugs_with_unknown_me...