如果都是新手就不值得，因为你需要花大量时间解释要做什么，怎样做，为什么他现在的做法不好，等等。

If they are all beginners it's usually not worth it, since you will need to spend too much time explaining to them what to do, how to do something, why the way they are doing it is bad, etc.

youdao

如果你想要从一大堆数据中取得有用的信息，按照常规做法，你需要做两件事：首先，小心翼翼地保存数据，对数据进行贴标签、整理、分类;

Used to be that if you wanted to wrest usable information from a big mess of data, you needed two things: First, a meticulously maintained database, tagged and sorted and categorized.

youdao

And b, they have what's called a low expense ratio since they're easy to implement, you don't pay anyone to be brilliant to implement if for you.

但是他们的费用比率很低,因为这种做法很容易，你不需要,有多聪明就能去实施。

麻省理工公开课 - 计算机科学及编程导论课程节选