The title says it all. I've tried digging up debate on this issue to see a proof one way or the other but it doesn't look like anyone is able to say whether or not it is. Clearly there are recursive structures in English, and that's about all anyone seems to say.
closed as primarily opinion-based by Tom van der Zanden, Juho, Evil, vonbrand, Ran G. Jan 9 '16 at 17:08
Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.