Synchronicity (book) is a book written by Carl Jung and Wolfgang Pauli that explains how the universe is connected in ways we don't always understand. The book explains how events or experiences that seem to be unrelated can still be connected on a deeper level. This concept is called synchronicity. We may not be able to see the connection between these events or experiences on the surface, but if we look deeper, there might be something connecting them. Synchronicity could, for example, be seen as when you think of a friend and then they call you right afterwards, or when you hear a song that makes you think of a special moment. These kinds of events are special, because it feels like the universe is talking to you.