A review should begin with a brief summary of the work, including a synopsis of the plot, major characters, and any other important details. This summary should be somewhat specialized to help support the specific critiques that the reviewer will be making, focusing on details that the critic will bring up later in the review. 
        
             
        
        
        
It's all the above. The scientific method is important to make these kind of finds.
 
        
             
        
        
        
The literary device used in the sentence is a simile. Similies use the words: like or as.