I learned https://www.physicsforums.com/showthread.php?p=1098513&posted=1#post1098513" that some people are sensitive to lower frequency light than others. In fact, some people can see well into the infra-red range. I was very skeptical, so I tested it out. I was right, I cannot see IR. However, to my astonishment, my son can! Here is my experiment, which I encourage you to try. I'd love to know. 1] Get really dark - throw a heavy blanket over your head or go into a dark room. 2] Point your remote at your face. Press some buttons. Note if you see the red light or not. 3] (the enhanced-assisted version) To ensure you're not fooling yourself - have someone else press the buttons so you can't anticipate on-ness or off-ity.