The answer is science.
You want to believe that human essense can "effect water... to change its expression". That is pseudoscience. Over 500 of chemistry we understand the chemistry of water. To anyone who has studied chemistry, what you are saying is incorrect.
Once you start making stuff up based not on experiment but on what is pleasing to you, it is no longer science.
You keep saying each water molecule is "identical".
This is the most ridiculous made up stuff. There is no test to prove each water molecule is identical. Atomic weight is only precice down to the accuracy of the instruments we employ to weigh an atom.
The fact that each molecule is a separate entity in itself proves it is not identical.
Like you are applying a blanket axiom that "things similar are identical".
That is not known or proven to be the case. They may have identical properties that place them in a set but they are not identical in the pure sense of the word.
To imply that they are identical in the pure sense is to make an assumption that is not testable by science. Who is "making stuff up that is pleasing to them"?
Even each atom of an element is not identical they may have they same properties but each occupy a different time and space. That in itself proves your claim false.
They are perhaps more similar on a magnitude scale than say, humans are, but even that is unknown because we do not know how deep the sub atomic strata of matter and antimatter and energy i.e dark energy goes.
So no, they are not proven to be "identical". They are similar to a great magnitude, is that magnitude infinite? Most likely, if not predictably, not.
If each atom is not provable to be identical than how can each water molecule be identical?
Your pure atomic science falls apart the moment you factor quantum physics into the equation and even gravity is still for the most part theoretical science.
There is no cohesive unifying theory of everything yet.
This is why superlatives like identical should not to be bandied about, they are counter intuitive to the discovery process.
They are identical to a certain magnitude and beyond that magnitude their similarity is unknown.
Beyond that magnitude their sameness becomes quantum science.
How general relativity and quantum field mechanics fit together is still a mystery of science.
Does quantum theory contradict relativity?
What is it about quantum mechanics that is incompatible with general relativity? ... Quantum mechanics is incompatible with general relativity because in quantum field theory, forces act locally through the exchange of well-defined quanta.
This is science.
And this science says your claims of identical particles is not testable to the point of mathematical proof.
Can the human body change the essence of the atoms in water? That also remains to be proven but that theory has not been proven false either.
The theories stating that atoms are identical are also pseudoscience.
It is unknown how infinitely similar atoms are, the answer lies on a level imperceptible to science.
Many highly educated people mocked the idea when bacteria was first proposed too...
...and electrical signals being sent through thin air, impossible!
Making stuff up... lol. This is often also called theoretical discovery.
What?! There are particles smaller than atoms?!!! (cynical)