Literacy is a medium means of defecting or conveying a message as a means of communication. “The medium of today is to show off” means how social media is used to “showoff’ all of todays world.
An idealist believes that somewhere there is an ideal for everything a model of perfection. They have religious beliefs and god’s music is ideal music. People are not ideal but are flawed copies of the ideal.
For idealist, the sunset is moving and is beautiful but the realist sees the sunset is the end to a day and uses all science.