It's okay to be wrong and learn from your mistakes
Janice is in math class, about to receive back a homework assignment that she is confident she did poorly on.
Janice wants to find out her homework grade.
Janice looks at the grade on her paper and then goes through each question to understand what she did wrong.
Janice looks at the grade at the top of the returned homework assignment then tears up the assignment.
Janice better understands the material and improves her grade on the next exam.
Janice doesn't learn what she did wrong on the homework assignment and ends up doing poorly on her next exam.