text: Another example on how classrooms should use facial expressions especially with students is displayed fully in paragraph #5 when the author states that quote the "calculation" to recognize faces is so complex now that you can recognize everyone's face on a computer no matter if you mention there name. "For instance, you can probably tell how a friend is feeling simply by the look at her face." This shows us the readers that we can identify peoples faces, on either a computer, or in person. It can be very useful for counslers because they can identify who this person, or people are walking into there offices.