For example, being normal people is necessary to be accepted by a society, so how people with privilege define what “normal people” are will have an impact important to others. People who have privilege don't care because they already have it, so they dominate this situation. Left-handers face many situations that make them uncomfortable. For example, most shapes of scissors, the location of the shutter button on cameras, some instruments, sports tools, some desks, and the location for inserting coins into vending machines are all intended for right-handed people. These situations always make left-handers uncomfortable. However, since the number of right-handed people is much higher than that of left-handed people, they dominate society. Right-handers therefore have the privilege of left-handers. The authors also focused on how people with disabilities struggle against society. Because they are not normal, they need more help than others in many situations, such as at school. For example, each teacher should generally have approximately 40