I'll admit I'm assuming that you are writing with the intent for your words to be read, understood, and integrated in some capacity into other minds. That is, you are engaging in communication. The contents of your communication are an argument, advice to think about and participate in the world in a certain way. Perhaps this was totally random, though, and you didn't mean to convince anyone of anything, and were merely pressing keys at random, in which case I apologize for reading intent into your actions.