On this day, the professor came to the classroom with a wad of paper and announced: "Today we will have a test."

The students are very nervous, who is not afraid of exams. However, when they got the test paper, they were all surprised, because the test paper was just blank paper - except for a big black spot in one corner of the white paper, there was not a single question.

The professor told the students that the task of this test was to ask everyone to describe what they saw.

This couldn't be easier, everyone started writing, and after half an hour someone handed in the papers.

Before the end of a class, all the students handed in their exam papers.

After judging all the students' papers on the spot, the professor said, "In today's test, none of the students passed."

"Why?" The class was in an uproar.

"The reason is very simple." The professor paused, and then said: "Such a large piece of white paper, and the inconspicuous black spots compared to the white paper, the main points of everyone's description are black spots. If the white paper is regarded as the It's our life, and the black spot is the bad deeds we have had, so everyone's choice is very problematic. Are we going to ruin our whole life just because we made a little mistake?"

The students listened and fell into deep thought.

"Also, if you take this blank sheet of paper as someone else's life, then everyone's attitude towards those who have made mistakes is surprisingly consistent. You see only black spots and no blank sheets. For decades, our country has The progress made is huge, and it is equivalent to a blank sheet of paper, and the twists and turns in the middle are equivalent to a black spot. The focus of everyone's discussion is on this black spot, and the progress of the whole society is completely ignored. Isn't this sad? So, I'm going to use this class to tell everyone to avoid ideological misunderstandings, and because of this, no one passed this test."

On this day, the professor came to the classroom with a wad of paper and announced: "Today we will have a test."

The students are very nervous, who is not afraid of exams. However, when they got the test paper, they were all surprised, because the test paper was just blank paper - except for a big black spot in one corner of the white paper, there was not a single question.

The professor told the students that the task of this test was to ask everyone to describe what they saw.

This couldn't be easier, everyone started writing, and after half an hour someone handed in the papers.

Before the end of a class, all the students handed in their exam papers.

After judging all the students' papers on the spot, the professor said, "In today's test, none of the students passed."

"Why?" The class was in an uproar.

"The reason is very simple." The professor paused, and then said: "Such a large piece of white paper, and the inconspicuous black spots compared to the white paper, the main points of everyone's description are black spots. If the white paper is regarded as the It's our life, and the black spot is the bad deeds we have had, so everyone's choice is very problematic. Are we going to ruin our whole life just because we made a little mistake?"

The students listened and fell into deep thought.

"Also, if you take this blank sheet of paper as someone else's life, then everyone's attitude towards those who have made mistakes is surprisingly consistent. You see only black spots and no blank sheets. For decades, our country has The progress made is huge, and it is equivalent to a blank sheet of paper, and the twists and turns in the middle are equivalent to a black spot. The focus of everyone's discussion is on this black spot, and the progress of the whole society is completely ignored. Isn't this sad? So, I'm going to use this class to tell everyone to avoid ideological misunderstandings, and because of this, no one passed this test."