Isnt driving instructor training too short

If I were to name one of the most frustrating things in life, on of the positions would definitely be people who are talking about subjects they have no knowledge at all. That is so frustrating that I can^t even describe it with words. I can^t understand such attitude. Why would anyone want to talk about something that he is not an expert in. There is plenty of people out there who are trying to give you advices all the time and yet they are not entitled to do it. Moreover they usually have problems in their life and still believe they are able to help you with yours. Recently someone asked me whether the driving instructor training isn^t too short. At first I thought that he was kidding because I can^t imagine a situation in which someone would actually ask me this question. He wasn^t joking though. He was just one of those people that i have told you about earlier. Even though he knows nothing, he will explain everything to you. I am not even sure if he knows that this driving instructor training lasts for three months. Probably not. That is really frustrating, isn^t it? What are the most frustrating things for you in life? Let me know about them.