Mistakes
One day in a school a student went to the teacher and told him with fear that he had spoiled the paper that teacher had given him and he requested for a new paper. The teacher got back the spoiled paper from him and gave him a new paper. The teacher told him that he had exchanged the spoiled paper with a new paper so asked him to use it carefully. The student, feeling relieved that he had received a new paper, thanked the teacher and promised to be more careful this time. As he sat down at his desk, he couldn't help but wonder what had happened to the spoiled paper he had returned to the teacher. Curiosity got the better of him, and during a break, he approached the teacher with a question. "Excuse me, sir," the student said hesitantly. "I'm just curious about the spoiled paper I returned to you. What happened to it?" The teacher smiled kindly at the student and replied, "Ah, that's a good question. You see, the spoiled paper you returne...