The function of school is widely used to better describe the functionalist theory. Within the theory are two functions: manifest and latent. A latent function is an intended function while a manifest function is non-intended. The latent function of school is to educate children, teach them right vs wrong and skills that they'll need to have success in life. The manifest function is the social aspect. Making friends and communicating helps them develop and relate to other people, which wasn't the original point of school, but happens anyway. 

Objects like glasses can give someone an immediate assumption when meeting or looking at another person. Symbols like glasses allows classic stereotypes such as intelligence, nerdy, or brainy to be incorporated in someone's image because of their glasses. 

Like the heart, symbols such as stoplights have universal meanings. Green = Go, Yellow = Slow down, Red = Stop. These colors and actions are closely linked and can be used with little explanation. 

Money is a symbol of power, greed, selfishness, and maintenance. People who have a lot of money are automatically assumed to have these traits without people knowing them. It is another stereotype that people can take away from other people without truly interacting with them.