I think everybody code-switches to some degree, as long as there is some sort of reason to do so in their society. It doesn't mean they use two dialects just as a bilingual uses two languages, because people often respond to dialect as if it

It's my math training - any counterexample, no matter how far-fetched, etc... I often use "the fairy-tale scenario" myself as a method of disproving spurious assertions regarding syntax or morphology. I'm relying ... my theory;

Snarf! Or, indeed: ROTFL! But chaps, although you have done ... that the examples you've given have been a little non-usual. It's my math training - any counterexample, no matter how far-fetched, etc... I often use "the fairy-tale

The case system for nouns and pronouns, grafted onto English despite the lack of any separate forms for nouns but the possessive, You can get rid of the "but the possessive". Thank you kindly, sir. (separate point:) I almost said

I remember reading some years ago that Catapillar (the track-laying vehicle manufacturer) developed a simple English language for non-English speaking engineers. Here we see one of the problems with the dumbing-down movement. Caterpillar, Inc.