When you see a person for the first time, you decide whether you would like to talk to that person in a few seconds. When you bite a sandwich, you decide whether it’s tasty almost instantly. The same applies to a piece of writing when you start reading it: after two or three sentences, you already understand whether you are interested in reading further. This fact is important not only for readers, but also for writers. They have to impress their audience and grab attention as quickly as possible.