The Thing in Itself

All the science on consciousness measures effects. These would be EEG brain waves, lighted areas showing on MRI scans, etc. All these scientific methods are noticing and measuring phenomena produced by consciousness, but none see the "thing in itself."

All scientific exploration of consciousness has an a priori problem. It is consciousness itself that is doing the perceiving, measuring, and concluding. Consciousness is the observer, and not an object itself.