Conformal thinking yoke: It refers to a bad mindset that recognizes and judges and solves problems, agrees with the majority, and has a lot of people, lacks independent thinking, has no opinion, and has no sense of innovation. Which of the following expressions does not belong to the "concrete thinking shackles"? ['Many pedestrians in front of them rushed through the red light and rushed to them.', 'Adults reverse their children\'s "left-handed" habits.', 'Expert opinions are trustworthy, and everyone is based on expert opinions.', 'Middle school students are required to wear school uniforms every day.']