Can I use an HDTV as a computer monitor?

Episode 1145
Norman fromNorman is thinking of replacing his computer monitor with an HDTV. Leo advises against that. HDTVs aren't as sharp as computer monitors because he'd be sitting up too close to it. He'll see all the pixels and the resolution won't be as sharp as a monitor. He'll be paying for stuff he's not using, too, such as smart TV functions. People do it, though, and it really depends on how the computer would be used. But in general, he doesn't recommend it.
Leo suggests going to dell.com and buying a 27" monitor if he wants a large screen.