I have watched it over 20 times. It has changed my life and the life of my family and friends in every way for the positive. It is just truly amazing information. I have a degree in physics as well and agree with everything in the film 100% fits with what we learned in quantum mechanics. This stuff has to be true. There is no "sloppiness" in the Universe. What you see and feel must manifest 100%. The only thing is that the film only touched the surface of the subject. What I believe is really going on, from experimentation and observation is that consciousness exists in a higher dimensional space (we know 11 exist) and from that higher dimensional space it is possible to change entire time lines in this space, which is four dimensional. Essentially the consciousness, existing outside our time line, is making decisions, the decisions are affecting the neurons in our body and creating feelings. The feelings and thoughts attract the experience. So, really the true cause is the consciousness, which has an ability to not react and create. Now, you can explain this from other points of view as well. Every word uttered by every Avatar from the beginning of time completely fits into this. Also, the reason why ceremony and "day-dreaming" are so important and the reasons why we do it. So much makes sense out of this film.
Review of The Secret
