I’ve got a daughter arriving in about 2 weeks, we’re already going to be doing everything we can for her (mostly organic food, Montessori principles for her toys, room setup, education, etc). I’d love to have subliminals for her too, though I imagine they wouldn’t be viable until after she was talking and maybe not even for a few years after that until her brain is more developed. I have to believe that the 18 cutoff is purely for legality/liability concerns rather than any practical limitation… after all, look at all of the educational stuff geared towards babies (Baby Einstein, for example). How effective those are is another topic, but I do think there might be a good market for it.
Can you imagine a child growing up with Stark or QL playing daily??