Dear Annie: I come from an extended family that is mostly successful. However, one of my cousins was born mentally and physically handicapped, and the family story is that her parents have incompatible blood types. However, they had another child 10 years later, even though they claim the doctor told them not to, and this child was born completely normal.
A few years ago, my mother disclosed that the cousin was really born with fetal alcohol syndrome. (My aunt drank heavily during that pregnancy.) However, whenever anyone broaches the subject, that person is verbally attacked by the entire family and written off as evil.