Video projectors are useful for at least two things; enlarging the display of a computer and playing back video (like televisions-having nothing to do with computers). Video projectors in rural locations can be a window to the rest of the world. One of the original definitions a of tele-vision is LONG DISTANCE SIGHT. The ratio of financial cost compared to the number of learner hours is vastly superior to any other solution. Video stored on flash media requires 1 gigabyte for 10 hours. In mid 2010, an 8 GB SD card costs $16 and holds 80 hours of video. In the coming years, an SD card will hold 2 terabytes holding 20,000 hours of video. In the long run Haitz's Law will impact video projectors in two ways.