Modern endeavors into quantum physics have revealed a touch of mysticism to their workings.
I don't know how much you know about quantum physics, so I'll give you the rundown.
There are four forces in the universe, ordered first to last by their strength - electromagnetism, strong nuclear force, weak nuclear force, and gravity. Physicists believe that these forces were, at the Universe's inception, combined into one unanimous force and broke apart from each other during the Big Bang. This is called the Grand Unified Theory, or GUT. Physicists have successfully 'combined' the forces of electromagnetism, strong nuclear and weak nuclear, but finding a way to integrate gravity into the theory can be thought of as a 'scientific Holy Grail.' Whomever discovers evidence to corroborate will be wealthy indeed.
Let's focus on gravity for a minute. We suppose that gravity is a powerful force because we see its effects everywhere - it's what's keeping our feet firmly anchored to the ground here on Earth. However, when you try applying gravity to smaller and smaller objects, gravity starts breaking down, until at a quantum level it is practically nonexistent.
Think about this for a minute. It's as if physics work differently depending on the scale at which you're observing nature.
Scientists would abhor having to consult a different set of physics every time they went from the macro scale to the micro scale, which explains the enthusiasm for the GUT theory. It's elegant and all-encompassing, and scientists - especially physicists - love elegance.
So let's talk more about what's actually going on in quantum physics. It was supposed for a long time that, in the vein of Newtonian Physics, all of physics could be understood if you just have the right information first. If you know a, and b, then you can probably know c. Quantum physics don't work like that. I'm sure you've heard of the term 'Heisenberg Uncertainty Principle;' it states that there are certain qualities about a quantum particle you can and can't know, such as its position and momentum simultaneously.
This is because - wait for it - particles change those qualities depending on whether or not they are being observed.
Electrons, for example, are so small and difficult to track that we can only guess within a small margin of error where relative to the nucleus of its atom it actually is. (Now, rather than three uniform orbits of the electron as depicted in the old physics symbol, electrons are represented as a 'cloud' representing all of the possibilities of where they could be.)
When an electron is observed - or, in this case, measured - it picks one and runs with it. It only begins to occupy the most probable locations it could be, and in doing so, sacrifices us ever knowing how fast it was going. That information is lost to us until we cease observing the particle, at which point it will go back to behaving completely at random.
The scientists - if only temporarily - infused their will into the particle by measuring its qualities.
What does that remind you of? Enchantments, perhaps?
Human beings are macro-scale quantum beings. We are made up of trillions of atoms, each containing electrons bouncing haphazardly without any rhyme or reason. Our environments are doing the same. The randomness may seem inconsequential, as it is so small, but when the cumulative sum of all electrons everywhere adds up, it equals a HUGE amount of uncertainty about how our universe works, and how decisions will pan out.
Our ability to modify an electron's qualities by assigning our own, combined with this huge amount of uncertainty, means that we as individuals can assigning our qualities to things - projecting our will onto objects, environments and people, aka spell casting - just by observing them .
This is the science of magic.