I have recently answered a question on another website where I used the ambiguities in the word "day" by way of illustrating how ambiguous English is. It is almost impossible to write a truly unambigous English sentence. Indeed, a very large part of commercial law is about such ambiguities.

I think nitpicking is often associated with a point that is well understood but would rather not be addressed, so a "non-response" nitpicking is used instead.