I am just observing this potential pattern. Harmonic patterns like this originate with Scott Carney. You can learn about it at his website @ harmonictrader.com/ He is a living legend. As an investor, I think may provide an extra layer of tools to one's personal arsenal in trading. It might come in handy and help one see the market one is looking at from a different perspective.
I hope my identification of the butterfly pattern is correct.