Why is Asperger's considered a form of autism?

i am not an expert at all, but my brother has aspergers and the way i would describe it is, if you take someone who is blind no vision at all and never had, and someone with 6/6 vison. a blind being autism and 6/6 being aspergers. 6/6 they can see the world they can see out side there small bubble but not like someone with 20 20. it is hard to get around talk about themselves get help and so on while a blind person cant make sense of the world at all really they need help from a dog a carer or whatever not sure if that makes sense so i do agree with it. the help you give is different when i worked in care before i became a EMT, what i would do when i met someone for the first time, i would speck to them as a "normal" person and see there reaction, it is the best way to talk to sufferers. don't speck to them as a child until you can see plainly the have the mental age of a child it can be frustrating for them if you do and make them very uneasy

Someone was saying that high functioning autistics don't try socializing as much as aspergers individuals? I was just thinking about personality traits. Wouldn't that play into an individuals differences between autistic people and such? Like, introversion and extroversion and shyness?