That's pretty interesting but I'm a little dubious about a couple of things. First the licking the uterus thing, how? They're in a sac! Second this statement : Als is more emphatic. "My bet is that poking, shaking, or otherwise deliberately stimulating the fetus might alter its developmental sequence, and anything that affects the development of the brain comes at a cost." Then goes on to say 'gentle talking' will be ok though. I'm sorry but no mother has ever done so little during her pregnancy that could count as not poking, shaking or whatever. I find it hard to believe that the successful development of a baby's brain is governed by a silent stimulus free world. It's also counter-intuitive after what they've said earlier in the article about the neural development. I would be more inclined to think that additional stimulation will help accustom the baby to the outside world before it is born.