May I help you , sir ?   Yes , I want to buy a VCR .   Well , we have many models to choose from here.Do you have a particular brand you want ?   No . I only want it to be a very good one . The best.It ' s a graduation gift for my son .   I see . And does your son have a VCR now ?   Well , he uses our VCR at home.But he's going to university in the Fall , so he needs his own VCR .   Does he watch a lot of movies ?   Yes , he sure does.In fact , he wants to become a movie producer himself.He wants to study film at the university .   I would like to make a suggestion then , sir .   Please do .   If your son wants to study film , probably he will start to collect movies himself .   Yes , I know that . So I want him to have a good VCR to use .   May I suggest you consider buying him a DVD player instead ?   DVD ? Isn't that like a CD ?   It is very similar . The technology is the same .   Why is a DVD better than a VCR ?   For one thing , sir , the quality of the image is usually better.That ' s because it's digital .   But isn't it more expensive ?   It is a little more expensive , sir.But there is one important advantage which your son might appreciate .   What's that ?   If your son starts to buy video tapes , he can't keep them very long .   And why not ?   Video tape breaks down after fifteen years.So if he collects a lot of tapes , after fifteen years they will all start to rot .   Hmm . Is that true ?   Yes , it is , sir .   Well . And what about DVDs ?   This is the excellent thing about DVDs.If your son starts to collect DVDs , they will last forever . They will never rot . 