To the Individual Experience of Subjective Consciousness
Perceptually speaking, we are all fundamentally alone in our minds. There can be no test to effectively translate my own experience to another. The one tool that comes closest to letting another share my thoughts is language, and even with all its shapes, with it’s infinite forms in infinite combinations, it often fails at its task.
Imagine someone with an allergy to oysters. They had never had one and had in fact been ordered to never partake. I could tell them about oysters. I could bring up the salt, the copper, the sensation. I could quote Hemingway and ask them to take a test based on my descriptions, but they would never know the essence of my experience.
This is perhaps a bad example, but my point is this. The next time you think you know how someone else experiences this world, stop. You don’t. You may get close, but you will never know.