My grandmother had a very interesting theory; she said that each of us is born with a box of matches inside us but we can't strike them all by ourselves; just as in the experiment, we need oxygen and a candle to help. In this case, the oxygen, for example, would come from the breath of the person you love; the candle could be any kind of food, music, caress, word, or sound that engenders the explosion that lights one of the matches