That's because they botched the proof. You need to sort the articles not by interestingness, but some separate canonical property, like creation date. Then you get a (here chronologically) first uninteresting article, which is interesting.
Server = Tuple[Address,ConnectionOptions] # array subscipt might not the best choice here, but it works
UserId = NewType('UserId',int) # ordinary function call
Scalar = int | str # could be equivalent to Union[int,str] with appropriate value of Type.__or__
0: for example: def intBit(N):
if N==0: return type(None)
if N==1: return Bool
if N>INT_WIDTH: return long
return int