The trouble with it is that until ‘Fall Out’ we’re not supposed to know who Number 1 is. If its not Number 6’s other self, then it’s someone else. That someone else would want to know the reason why Number 6 resigned, presumably so that he could pass the answer onto someone back in London. On the other hand, if Number 1 and Number 6 are one and the same, there can be no question as to the resignation. Number 1 should know why Number 6 resigned. Number 1 may well be punishing Number 6 for his betrayal of his own beliefs, and so making him suffer.
Does Number 6 feel guilty for that resignation? He probably didn’t take the decision to resign lightly, and agonized over it afterwards. Number 6 wanting peace of mind, how dare he? Number 1 wouldn’t put up with that! Number 1 has power, and position, and Number 6’s resignation is a danger that could take all that power and position away! Number 6 is a danger to The Village!
We know that Number 1 is Number 6, Number 1 must know he’s Number 6. But the thing is Number 6 doesn’t seem to know he’s Number 1! It is said that Number 6 is told he’s Number 1 during the opening sequence, but that all depends on where one places the emphasis. Otherwise Number 2 is simply telling the Prisoner he’s Number 6.
Be seeing you