1. All media are constructions.
    
2. Each person interprets messages differently.
    
3. Media messages contain commercial interests.
    
4. The media contain ideological and value messages.
    
5. Each medium has its own language, style, techniques, codes and conventions.
    
6. Each medium has a unique aesthetic form and pleasures. 
    
7. Media contain social and political messages. 
    
8. Form and content are closely related in media.
    

From: Media Literacy Resource Guide, 1989.