Communication can be broken down into the two categories of informing and arguing. Generally speaking, informing is communicating about something that there is no disagreement on, while argument is an attempt to persuade someone to take some action or to believe something. For instance, giving a classmate the address to the class home page would be informing, while telling a classmate that the design of one home page was better than another would be the beginning of an argument, an attempt to persuade the classmate. It's the beginning because to be an argument, one needs not only the claim concerning the homepages but also the reasoning for the evaluation of the homepages.