Constraints can also determine the style and technique

 Every art form has it’s own set of rules that it follows, setting it apart from the rest. For instance, a sonnet consists of 14 lines written in iambic pentameter and must follow one of several standard rhyming schemes. These are the rules of the game when it comes to writing a sonnet. As a reader or critic you know a sonnet is good by how well it copes with these constraints. Whereas a writer will use the limitations of a sonnet to challenge themselves to greater poetic heights by channeling their inspiration into a difficult mold.