I am not from an English speaking country in the sense that English is the mother tongue of the natives there.
But I believe that I understand English and modesty aside that I write decent English as to be intelligible to English conversant peoples.
Yes, it makes sense to ask what is bluer than blue if you have one particular blue colored thing and another particular blue colored thing; so that from your not-color-blind eye you can judge which one is bluer than the other.
That brings in the question where does blue starts and ends being blue?
It can be no longer blue because the blue gets so light that your eye cannot anymore see any blue in it, or it gets so blue that your eye cannot anymore see any blue in it.
Your question asking what is bluer than blue? is it a meaningless question?
Like what Hawking is supposed to have said:
Asking what comes before the Big Bang:
- ...is like asking, what is north of North Pole? which is a meaningless question.*
To my thinking, no it is not a meaningless question, unless your idea of meaningful questions is
a priori limited to a self-chosen field of questions which does not admit of any questions outside; like for example the world of the Big Bang, so that the world of the Big Bang is the only world you want to think about, and nothing outside should engage your intelligence -- which is to my thinking very unintelligent.
Is there a world outside the Big Bang world?
Of course there is, on intelligent thinking alone, because experts of the Big Bang world tell us that it has a beginning, that is why.
Is there a north beyond the north pole?
Of course yes, because there is a point that is more farther north of the north pole.
Simple intelligent thinking.
Unless you have reached the last frontier of the north pole beyond which you cannot anymore not even in your imagination conjure a point more north, so that you can say
non plus ultra.
In regard to something more blue than another thing that depends on your eye.
But in regard to what is north of the north pole that depends upon your intelligent thinking.
Yrreg
*What is north of the north pole being a meaningless question is usually attributed to Hawking, but see
this author who attributes it to Penrose. So does anyone have any writing of Hawking or Penrose where we can read that question and answer?