It is possible to observe how people react to things and infer a difference in perception. My oldest son likely has an auditory processing disorder and mishears things if he isn't watching someone talk. Other people will consistently agree that X was said while he insists it was Y.
When he was 19 and recovering from a health crisis, he casually mentioned that he knew he was getting better because heno longer tasted colors. I recently asked him what that meant and he said he perceived color but with his tongue.
They have developed vision products for blind people that feed data to the tongue to let them see. So, in some sense, new technology is confirming the ease with which we can cross wire the senses to perceive something typically only perceived by another sense.
When he was 19 and recovering from a health crisis, he casually mentioned that he knew he was getting better because heno longer tasted colors. I recently asked him what that meant and he said he perceived color but with his tongue.
They have developed vision products for blind people that feed data to the tongue to let them see. So, in some sense, new technology is confirming the ease with which we can cross wire the senses to perceive something typically only perceived by another sense.