I don't know about that. I don't know you from heck but I am prepared to bet that my depth of knowledge of the English tongue is as good as yours ( Presumably you are one of those 'native speakers'). English was the first language I learnt. However, the people around me that spoke it were all non-native speakers. This means that most of the way I picked up words came from books. Again, I was never a child obsessed with phonetics so my pronunciation of things is weird.