PHI, Fibonacci and YOU!

To begin understanding the nature of ourselves, one must begin with the innate nature of what us, is.  Therefore to ask "what is, that connects humans to all other living things"  both is bewildering, yet if simply defined, would provide light to other questions about the nature of our existence.   Propose the answer to be in our biology.

Leonardo Da Vinci's "Virtruvian  Man" illustrates the mathematical answer.  If one examines the ratio of length between the end of the index finger and first joint, to the same point to the second joint, the ratio is equal to that of the first two joints to the whole finger.  This pattern continues from finger to hand, hand to forearm, hand and forearm to whole arm and so on throughout the body.  The ratio is golden.  Simplified mathematically, A + B is to A as A is to B.  This ratio builds all living things on earth and is seen throughout in Fibonacci Spirals,
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... and fractal broccolli

 But the real question is, how does this have to do with music? Listen to your favorite song, see if the best part is about 61 percent through, or a little after...   In common song form the bridge is the at the golden mean of the song.