NPPF Get Real

[s~Z]

>>>Correct me if I'm mistaken, but I believe he compared Zembla to Ultima
Thule
and Ultima Thule to Scandinavia, thus the equation.<<<

There is no such equation of Ultima Thule and Scandinavia.
Ultima Thule is another fictional far-off land.

Your initial point confuses the reality out here with the reality of Pale
Fire.
I am quite aware that Zembla is Nabokov's fictional realm. I was addressing
the issue of whether or not Zembla is a real land within the novel, one that
John Shade and Chuck K recognized, or if it is a delusional creation of
Chuck's. Nabokov's comment points towards it being fictionally consensual.