text: After the different units are weighed out the software will identify mixed emotions. According to paragraph four," Each expression is compared against aa neutral face (showing no emotion)". In order for the third step to work it has to be compared to a non-facial exspression. We as humans do the same type of steps when making an assumption. Think about the way we can tell if our friend or family member is feeling. Nomatter if they are sad, mad, happy, or glad we usually can see or feel how they feel.