"Similarity in vibration has also been used to explain the phenomenon of synchronicity -- "coincidences" of seemingly unrelated events that share a common meaning... [A] well-known illustration of this phenomenon was described by psychiatrist Carl Jung, the originator of the notion of synchronicity . One of Jung's patients was recounting her dream about a golden scarab beetle when he heard a rapping on the window. When he opened it, a rose chafer beetle -- the insect most similar to a scarab in Jung's region -- flew into the room. Jung quickly put two and two together. He realized that the mythological meaning of the scarab -- an ancient Egyptian symbol for rebirth -- was highly pertinent to his patient's problems. And this was also the reason why the insect had appeared in waking life."