The following are commonly used phrases and suggested alternatives. It creates an image that some people are inferior to others. It may refer to some people in derogatory terms. It excludes some people from the subject of the conversation. Isolates or exaggerates particular features of a group.
Girls can' t do maths.
Women are not good supervisors. People with disabilities always take excessive days off work. It is often used unconsciously in our everyday conversations, in business and in education. It frequently makes assumptions about specific roles for women, men and groups of people that are changing in our present society. It lacks clarity and precision and often calls upon listeners to make a judgement as to the intent of the speaker.