Did anyone really achieve what happened in the universe a billion years ago?
And if not, why do we not treat astronomy as a philosophy?
Has anyone obtained and what is electricity?
We know it works on any device according to the "nature" of the device. We know that this is a group of physical phenomena related to the presence and movement of an electric charge. The presence of an electric charge, which can be positive or negative, produces an electric field. Any electrically charged particle can cause electrical phenomena, but in nature most electrical phenomena result from the electrical charge of electrons and protons only.
But do we get the essence of electricity or the way it works on us?
In other words, we deal, research and draw conclusions about different substances and phenomena even though we do not achieve their essence.
So when you ask how I can design an experiment so that it disprove the existence of essence, I am unable to do so.
I agree with you that there is a problem here. A question that the experimental laboratory of the 21st century will have to deal with. And I suppose the same conventional tools with which we have advanced in scientific development will have to change.