for Cote
"quantum physics says that we are all made mostly of energy, not matter,"
Nope it really really doesn't. relativity gives us a way to describe the amount of energy that matter could be converted to if annihilated. Quantum mechanics says that mass is one of many quantum numbers that describe the properties for fundamental particles like photons, protons etc.
" and that it is scientific law that all energy in the universe is connected to and communicates with all other energy in the universe."
Nope it really doesn't. Only things within our light cone have EVER at ANY POINT even known of each other's existence...communication travels at the speed of light. The unbelievably vast majority of the universe will not know you exist within your lifetime.
"If you change the frequency of the energy of one electron, then energy shifts all across the universe as no electron can vibrate at exactly the same frequency as any other."
Nope not at all true. All of the electrons around a specific atom must have a different combination of quantum numbers. But frequency/energy is only one of those numbers (other include things like spin, angular momentum etc.) So in fact within one atom many of the electrons may have the same value for energy/frequency. And of course another atom has it's own set of orbitals and the energies of those electrons can be the same as for the first lot.
"Read books like The Bond by Lynne McTaggart to find out the science behind how energy works."
Erm nope not in a million years....she has no training in science as it not qualified to say anything useful on the topic. Turns out that I am actually a Master of science and am qualified to talk on this subject.
"Energy healers (like Reiki, acupuncture) seem to have known this already for thousands of years, but didn't need to 'see' it to know it works - they had faith, and the proof of actual healing. "
nope they did not have proof of healing. If they did we would not be having this conversation. All of the reviews of evidence for Reiki indicated that it has never been demonstrated to work for any illness.
"Now science is beginning to catch up and prove a lot of what these ancient spiritual traditions have known to be true for aeons."
see above. Science cannot provide an explanation for why something works if it doesn't in fact work. There would be something quite wrong with a scientific method that was capable of proving how something that doesn't work, actually works