Know： Boy, do you still remember the mp3 player around your neck？

　　Mp3 is still here today, not the player of that year. The author’s impression of mp3 players began in high school. At that time, I was still using a heavy tape walkman, but "wearing headphones and hanging an mp3 player around my neck" has quietly become a campus fashion. At that time, the mp3 player was relatively large, connected with wired headphones, and looked from a distance, as if a stethoscope was hung around his neck.

　　At that time, I was lucky enough to experience my roommate’s mp3 player. It was very convenient to listen to songs, but it was inconvenient to find songs. The playing modes were only sequential playing, random playing and single loop. As an expert in using the rewind button of the walkman, I can judge the position and rewind time of a song according to the diameter of the tape reel, so the mp3 player is really "hehe" in my eyes.

　　Unfortunately, the good times didn’t last long. As soon as I graduated from high school, digital products such as walkman and tape were swept into the history museum along with the "rewind skills" that the author was proud of. But they were not killed by mp3 players, but by more advanced mobile phones. When I was in college, I used a mobile phone called "Nokia". Now children may not have heard of this brand. Back in those days, Nokia dominated the mobile phone industry with its Symbian intelligent system. It could not only listen to mp3 music, but also watch movies on a 2: 00-inch screen. Of course, more importantly, it saved money on mp3 and mp4 players.

　　However, the author’s college roommate Z still keeps the habit of using mp3 player. His mp3 player is a famous brand product in Japan, which costs thousands of dollars. It is said that the sound quality is excellent when used with a pair of German brand headphones costing more than 300 yuan. I’ve listened to it, too, and it’s really good, but if it’s too good to be wanted, it’s not too bad.

　　This Z student not only has an mp3 player, but also an mp4 player with a bigger screen than his face, which is the originator of the current big-screen mobile phone. At that time, I thought that it was just around the corner for mobile phones to replace mp3 and mp4 players, and the practice of Z students could only be simply evaluated as rich and powerful.

　　However, classmate Z gave me an unexpected answer. He said: "the computer is very powerful, right? But every time I turn on the computer, I always change my original intention unconsciously. For example, I originally wanted to watch a movie, but I played a game." I wanted to listen to music, but I got online. So I think that computers are used to play games online, mp4 players are used to watch movies, and mp3 players are used to listen to music. "

　　Some people may say that this is your classmate Z’s poor self-control. But just imagine, if you were given a computer with Internet access and full of movies, music and games to learn English, how long would you last without external supervision?

　　Once upon a time, the author was superstitious about self-control, but if we contact the supervision mechanism, we will find that in a relaxed environment, facing a world full of temptations, people basically have no self-control, and the probability of getting lost or even sinking is extremely high.

　　"The keyboard starts and ends, and you know exactly that 88 keys are there. You can’t go wrong … I like it, and I can easily cope with it … in that infinite spreading city, everything is there, but there is no end, no end at all. What I can’t see is the end of all this, the end of the world. " At the end of the movie legend of 1900, the hero 1900 uttered such a sigh.

　　I don’t know how many netizens have had similar ideas to 1900 when facing computers and mobile phones. Or perhaps, many netizens have lost themselves in the abyss of network information and forgotten the original intention of using computers and mobile phones before they have time to express their feelings.

　　Many years later, when I bought a certain brand of electronic paper book reader, I remembered the classmate who listened to music with mp3 player in college. Someone asked me: Why spend more than 800 yuan to buy a digital product that is slow to respond and can only read books?

　　To this, I can only answer: because my self-control is too poor.