“Seasoning Recipe” in Random Music

  After get off work, I am in a rare good mood. The first thing I do when I go out is to put on my headphones, open the playlist in the music software, and choose to play randomly. At this time, you really want to listen to a certain song, but there are thousands of songs in your phone, can you hear the song you want to hear? A miracle happened, and now that song is playing.
  You burst into ecstasy and were so shocked that you couldn’t speak for a long time. Because the songs are played randomly, in terms of probability, the possibility of this song appearing is only one in a thousand. How can there be such a coincidence? To be honest, you are not mistaken, it is indeed not such a coincidence, this situation is very likely to be related to some songs you often listen to recently.
  That is to say, what songs do you often listen to, which singer’s songs do you like to listen to, when to listen to fast songs or slow songs, etc., music software is “researching” these every day. When the music software obtains this information, it will arrange a random order for you according to your preferences, so random music is not really random, but “pseudo-random”. If you don’t believe it, you can click “Previous” after listening to a song. If the previous song is the one you just listened to, then the random music is “pseudo-random”.
  ”Pseudo-random” is also called shuffling algorithm. Its principle is like shuffling the cards, first reshuffle the order of the songs in your playlist, generate a new playlist, and then play it in the order of the new playlist. Of course, the new playlist may not change for several days, or it may change every day, it depends on whether you change songs or choose songs. Because this is a kind of information, after the music software collects your information, it will adjust and reshuffle at any time. In fact, music software is not a real “shuffle”, but to cater to your appetite, after intervening in the order of the playlist, and then push it for you.
  Of course, music software also has miscalculations. It also has the potential to play some songs that upset you when something sad suddenly happens to you. However, if you encounter this situation, don’t complain about the music software, just change the songs a few more times.
  In addition, if you listen to the same song every day, and sometimes you get tired of listening to it, and the music software pushes this song for you at this time, of course you don’t agree. The ancient Greek philosopher Democritus said: “When excessive, the most suitable things will also become the most inappropriate things.” Therefore, while choosing your favorite songs, you also hope to have enough freshness.
  In this case, you want to be “really random”. The so-called true randomness means that among N songs, the probability of you choosing a song each time is one in N, just like drawing lots. You toss a coin from the air, and there is a 50% chance that the coin will come up heads and tails each time. So, the first time the front appeared, must the second time be the back? This is not necessarily the case, maybe there will be fronts or backs several times in a row. It’s the same with listening to songs, and it’s even worse if you have several songs of different genres in your playlist, and sometimes there may be songs of the same genre in succession, and these songs happen to be the ones you don’t like, which is even worse. Therefore, the imbalance of “truly random” will make people feel helpless and lack freshness. It can be seen that “true random” is a choice without emotion, and it will not consider your feelings.
  In order to satisfy you that you are not sure which song to listen to, but also have a sense of freshness, “pseudo-random” adds a “secret recipe for seasoning”, that is, adopts a more scientific intervention method for music software. The music software will try its best not to play the songs you have played recently and separate the songs of the same singer when playing songs randomly, and the songs you often change will also be filtered out or directly “closed”, even According to the time and place, some just-right music will be pushed, which not only allows you to do whatever you want, but also makes you believe that it is “truly random”.
  Of course, this kind of “pseudo-random” that makes you feel smart is produced on the premise that you have listened to songs for a long time. The more songs you listen to, the more the music software will understand your mood. Will be more satisfactory.

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