Ah, Bill, not everyone would agree with you that a change of handedness was a "fetal defect"!

Hell, it makes sense to me. The brain runs brain waves, yes? An ultrasound uses waves also, yes? Doesn't seem implausible to me that the latter might interfere with the former. Maybe it does interfere in more ways than we are yet cognizant of - but obviously not deleterious ways (just as the hand thing is not deleterious - just not desirable, to my way of thinking, because unfortunately this is a right-handed world and lefties are at a bit of a disadvantage because of it).

The brain is a mysterious and wonderful thing. Perhaps the most curious thing about it, is that we use it, to study it. Will we ever plumb its depths? I'm guessing no.

Let us go in peace to love and serve the board.