Диалог на моя любимая телепередача

Sam: Betty, quickly turn on the 5th channel.  
Betty: Why? What's on?  
Sam: My favourite TV show starts now.
Betty: You mean that program about science and technologies? 
Sam: Yes, exactly. They tell lots of interesting things about new technologies.
Betty: Do they tell you that watching too much TV is unhealthy? 
Sam: Come on, Betty. Don't be a bore. 
Betty: Well, I wouldn't if you hadn't occupied the only TVset in the house for twenty-hours a day 
Sam: This show lasts only for half an hour. Then I'll let you watch what you want. 
Betty: Ok, turn it on.
 Sam: Look! They are speaking about the history of TV  
Betty: That's exatly what we need to know right now. In my opinion, TV was invented long before we were born. 
Sam: Of course. Along with the radio it was one of the earliest broadcasting tools. The first mechanical televisions were sold in 1928. Later on, there were the first mass-produced units.
Betty: Well, the TV was black-and-white then. When did the color TV appear?  
Sam: As far as I know, they came into wide use in late 1960s.
Betty: I still remember our first TV. It seems to be so old-fashioned now, when there are thousands of digital, LCD, plasma TVs.
Sam: You're right. We've also had a video recorder, which was gradually replaced by DVD player.  
Betty: Why do people invent so many unnecessary devices? 
Sam: Why unnecessary? I think they all make people's life easier. It's called the technological progress. Each year, there are newer devices launched on the market. Imagine how you would live without a vacuum-cleaner or a microwave. These automatic machines are nearly in every house today.
Betty: On the one hand, you are right. We really need such devices like washing machine, microwave, dishwasher, vacuum cleaner in the house. However, when it comes to TV, I think that we could easily live without it.
Sam: You're saying that because you have a computer. If you didn't have it, you would watch TV more often.
Betty: That's true. I watch most of the films on my laptop.
Sam: In my opinion, computer is the same TV only with additional information and facilities. It also has a screen and you can watch whatever you like on it.
Betty: Yes, but in addition I listen to music, type my homework, chat with my friends, edit photos, read the news and find all the necessary information via Internet.
Sam: I still think that TVset is a great invention. In fact, many modern TVs allow you to connect laptop or any other devices to it so that you can work on a larger screen.