We don't know if dark matter exists, but we can still observe it by its gravitational effect on large astronomical objects. We can't be sure it's dark matter, b

We don't know if dark matter exists, but we can still observe it by its gravitational effect on large astronomical objects. We can't be sure it's dark matter, but it's "likely" dark matter. I believe we can do something similar with consciousness. We can make measurements or observations of a person and conclude they are "likely" consciousness. Maybe we can't ever be 100% certain whether a person is conscious or not. But nothing in science is 100% certain. No matter how much evidence we have, it would only take a single counterexample to disprove a well established scientific theory.