No kidding. The effective PPI (number of dots that make up the display / size of the image being projected onto your retinas) of a large TV viewed at a distance

No kidding. The effective PPI (number of dots that make up the display / size of the image being projected onto your retinas) of a large TV viewed at a distance is pretty high, though, so both "retina displays" and large, low-resolution TVs viewed from a typical distance require large fonts etc. to be legible.