Obviously, he cannot. Empiricism will reveal only what is happening materially unless we expand it as they do in the field of Psychology, to include meaning.
The Internet, the computer, the monitor, the photons, the retina, optic nerve, mIdbrain and cortical structures including the occipital lobe and motor cortex, the spinal cord, muscles of the arm and hand, the keyboard, and back to the computer, we can isolate this series of physical events from the rest of time and space, breaking them down into molecular processes. This would tell us what the matter is doing in terms of the electrochemical and physiological structure involved.
It would tell us nothing of what it is truly about, communication. There is meaning and a relational quality to what is happening right here that will be missed when we put on the intellectual blinkers that allow us to see only brain. It’s sort of mindless as the saying goes.