1. Look at 5 different web logs (also called web journals or
blogs) from this site; http://www.blogger.com/.
Are these 5 blogs completely alike?
2. Cut three apples in half so that the center of the apple looks like
a star, are they exactly alike?
3. Compare 5 co-workers, or 5 students, or 5 teachers. Are they exactly
alike? Consider how it might be better to hold a mental index in mind for
each individual, e.g. student1, student2, student3,
student4 and student5.