So when babies are learning before birth, the main thing they're learning is getting to know mom, and getting to know the father too as much as they can. So they're learning from taste. They taste the things the mother eats. They're learning from smell, the aromas in the home. And they recognize their home when they come into it because of the smell. They're learning from sound. There's a really interesting sound where they had moms play a favorite song to the baby over and over again during the third trimester, but then agree not to play it again for a year. Then, on the baby's first birthday, they started playing a bunch of songs from whatever genre the mom had chosen. So if it was classical, they played a bunch of classical music. If it was hip hop, they played a bunch of hip hop, whatever it was. And in that mix was the song they'd heard before birth. And when the song they'd heard a year ago came on, the baby stopped what they were doing, they alerted, and they turned and looked at their mom. They remember what they hear before birth.