He has Asperger's syndrome which is a form of autism which has created characteristics in him that limit his success in social interactions. Because of this, Don has had many dates but never two with the same woman. Don is 39 years old and would like to be married so, typical to his scientific style, he develops a questionnaire for women to complete to determine whether they would be good wife material. Don is very accomplished in science, cooking, Akikido and music but has difficulties in human relationships. Don approaches every problem from a scientific point of view and has few friends because Don has difficulty interpreting facial expressions and sensing human emotions.