Comment by kazinator

I understand the point perfectly. However, if I have a NaN which is captured in a lexical variable (perhaps the result of a division by zero, as you note) then in fact I do have a particular infinity: whatever object is inside that darned variable! If I do another division by zero, then sure, hit me with a different NaN which doesn't compare equal to the first one I got. But don't make my variable not equal to itself.