Is anyone here claiming Terri is a Mensa candidate? There are people who have had most of their brain literally blown away who are nonetheless able to live productive lives even if they're not the smartest people around. I see nothing in the CT scan that would prove there would be no possibility of improvement if Terri were actually allowed continuing treatment by people who wanted her to improve.
She had lots of therapy in the early years without improvement.
The Montessori Method was first used on children who were born with literally half a brain that many had given up on. The brain is a fascinating organ.