It's not just time shifting - as far as I know, there's no law that requires me to erase the tape after watching it once. After I've recorded the tape, I can ke

It's not just time shifting - as far as I know, there's no law that requires me to erase the tape after watching it once. After I've recorded the tape, I can keep it forever and watch it as many times as I want, even years after the show has gone off the air. It becomes an archived copy.