Imagine you’re in a classroom with many students, each with their own name. The teacher wants to assign tasks based on students’ names, but the names themselves are meaningless and can’t help the teacher make decisions directly. So, the teacher assigns each student a number, like Xiaoming is No. 1 and Xiaohong is No. 2. These numbers act as “labels” for the students, helping the teacher organize them better. However, the numbers alone aren’t enough, as they don’t carry much information....