Naom Chomsky was first a linguist and then a political activist. His idea is that grammar is a set of Rules that given an input of all known words in a language can produce the infinite array of all possible grammatically correct sentences visa rules for grammar but there are also rules for words for accent.
Now we have computers that are so powerful we can build neural networks and these are are tools that allow for artificial intelligence and learning.
Below, is a video that explores this idea for for adults learning a second language
What are your thoughts?
https://youtu.be/qyjorhutyr4