[forty]

It is true that learning extra languages makes it easier and easier, but that just makes the learning capacity of babies even more impressive: they are not even learning a language, they are leaning what is a language, what does it mean to make sound with their mouth, etc etc.

Several comments seem to suggest babies are learning to speak full time, but it's very far from it, they have to learn to walk, eat, read physical expression, draw, etc etc, all kind of things we don't even realize. They are just awesome learning machines, which I find fascinating to watch.