In fact, we are all unique and differ in many ways. Some of the differences we can see and others we can’t.
Think about way in which we differ that we can see.
For example:
Hair colour
Age
Gender
Eye colour
Ethnicity
Height
Some disabilities
Now think about ways in which we differ but which we can’t see.
For example:
Religion
Values
Beliefs (including political beliefs)
Nationality
Some disabilities
Hobbies
Sexual orientation.