How do you know if your husband has autism?

A mildly autistic person (Asperger's Syndrome) has trouble understanding social situations or conventions. A more seriously autistic person does not speak, which is a very noticeable symptom. If you can watch the popular TV comedy, "The Big Bang Theory" you will get a good idea of what autism can be like, from the character of Sheldon Cooper. Of course, most autistic people are not quite as funny.