Yesterday I was listening to Brahms' "Variations on a theme by Haydn", and it occurred to me that most people listening to this might think, "pretty music", but would totally miss all the cool thematic relationships tying it together. It took a lot of musical training on my part to be able to recognize this aspect of the work.
Which brings me to the whole synchronicity issue. People who aren't conversant with Jungian psychology will probably miss many of the "synchronistic" cooincidences...and even those that are, are likely to miss many of them as well, since it is likely that many, if not most, coincidences are completely unidentifiable. For instance, the person in front of you in the line to see a movie doesn't have a neon sign on them saying, "I was in the basinet next to you in the maternity ward". This would be something that goes completely unnoticed.
So, which part of synchronicity is ruled by some unknown physical law...the part that makes coincidences happen, or that part that makes us notice them? Or is it some convoluted mixture of both?