This is an interesting take that I hadn't considered the reality of, before. We rely a lot on self-reporting but only for lack of a better option that doesn't violate ethical conventions. Self-reporting is subjective, making the data shakey at best, but even an objective observer can misinterpret what is being observed. I'm mot much of a scientist or philosopher, but that seems like a remarkably large problem when it comes to truly understanding the human brain.

How does neuroscience get around this problem, and how close are we to actual "brain chips" that could provide viable diagnostic data?