They don't understand the technologies that are in place and thus, they feel uncomfortable with the outside world. Their ventures outside of their home become more and more infrequent. It is sad that their inability or lack of initiative to adapt to our evolving society has left them homebound. Perhaps a community outreach program to assist people who lack technological skills would be a viable alternative. Because this revolution isn't going to just stop or slow down for the Luddites who can't or are too lazy to keep up.
Evolution is a constant phenomenon.
Those who can't keep up will simply fall behind, turn bitter, and talk about the good ol' days when the earth was flat, the wheel was square, and the only way to send mail was through the U.S. Postal Service. Well, as Dr. What I take this to mean is that science fiction is often used as a medium to grapple with current issues and the effects these issues might have on our future. One fear that people have today that was addressed in the movie is the supposed duhumanizing effect of increased contact with technology. The act of dumping his childhood makes him more like a machine, and thus dehumanizes him.