Do all babies babble in the same language?
No. There are well-attested experimental results that show babies know what language they ‘speak’ while they are still in the womb. A fascinating introduction to the subject is Steven Pinker’s ‘The Language Instinct’. By the time a baby is born it knows to babble in Czech, or Welsh, or Kitsekiri. If you have ever nursed a Bantu baby, you can actually hear this. …. Another interesting fact is that when religious believers ‘speak in tongues’ they always speak in tongues in their own language. (The nonsense they produce follows the same phonemic laws and intonation patterns as the language they grew up speaking). Don’t let the Pentecostals know I told you that.
