Not only your excellent example, geek, but many times these "tests" to determine "genetic problems" are Just Dead Wrong.
The AMA *admits* to a very high error rate in diagnosis, I wonder what the real numbers are. And we are going to kill babies based on this?
I was all set to toss out "Stephen Hawking" too.
I'd no idea the tests used to determine genetic abnormality were that inaccurate.
Btw, I knew three adults that had been adopted as children, and they referred to themselves as "would be abortions" or some such. They were under no illusions as to their chances of being born in this day and age.