I once watched a guy install cable internet and television. It was very interesting when he explained how it all worked. I had no idea how intricate it all is, because it looks so simple. He explained the fiber optic tester, and how it checks to make sure that everything is working exactly as it is supposed to. It was neat to be a part of that. I love to learn new things, especially if it involves technology in any way. If I ever have a problem with my cable in the future, I am confident that I will know what to do.