A thing ‘performed,’ however, certainly suggests human authorship. We could say that the sea performs high waves or that the weather’s performance is dramatic (and perhaps thousands of years ago we were willing to accord dramaturgy to the elements), but ‘a noble or brave deed’ suggests human action, and epic narrative is constructed around brave deeds done by people. But the exploits are often attributed to mythic figures, and in the cases of actual persons (Jesus, for example) the deeds done are fantastical.
