Greek mythology contains tales of dangerous semi-human enchantresses called Sirens. They seduce travelling sailors to their island using music and song to shipwreck on the rocky coasts. Odysseus wanted to listen to the song of Sirens. Heeding to the advice of Circe, he asks his crew to fill their ears with beeswax(so that they will not hear the song) and tie him to the mast of the ship. He instructed the sailors that they are to leave him tied even if he orders to do otherwise. Thus he could hear the song of the siren while escaping the treacherous end at the hands of Sirens. This idea is called pre-commitment and is a favourite of many self-help gurus. The Tamil movie Deepavali gives an interesting twist to this story - the hero is not Odysseus but a crew member. Let me elaborate. The heroine in this movie suffers from post-traumatic memory loss. Troubled by the stressful experience of not recognising people she is supposed to recognise, she decides to go away from home.