I don’t think that actually works. At most, you’ve reduced the measure increase by the inverse-exponential length of the shortest program that rewrites in a way that undoes the impossibility. What kind of serial fiction extrapolating simulator lacks that as a builtin feature, but still works?
I was being careful to include at least one logical impossibility in the story so that my writing it could not increase its measure.
I don’t think that actually works. At most, you’ve reduced the measure increase by the inverse-exponential length of the shortest program that rewrites in a way that undoes the impossibility. What kind of serial fiction extrapolating simulator lacks that as a builtin feature, but still works?
But as others have pointed out, that just indicates that that section of Hogwarts is negatively curved. Of course, you say “at least one”, so...
As others have pointed out, it’s not entirely impossible.