I belong to the fraction, who thinks, theres more to the roof top conversation than just psychological wrestling. Even, if Sherlock implies, that he might be as ruthless as Moriarty - so what? Moriarty tells him, that nothing, not even torture, will force the code out of him. Moriarty doesnt care for his own life and well being. He wants to win the game by absolutely forcing Sherlock to jump. His first mistake was to let Sherlock know, there IS a recall code. Firstly, this is of no great concern to him ('You talk big...'), but then he sees something or Sherlock conveys to him, that he understood the nature of the recall code. Jim says 'as long as you've got me, you don't have to die..., Well good luck with that!', before he kills himself. If the recall code really consists of biometrical data, which only a living body can give, Moriarty has, by killing himself, destroyed this code once and for all. Sherlock has to go through with the jump, and that was all that ever mattered to Jim. By killing himself he has won at least part of the game.
Biometrical data as code isnt really that far fetched. Its used in many areas nowadays; they even can be transmitted by smart phones. Whatever the details, the thought that Jim kills himself in order to destroy that code is a very elegant theory.
As to clues, which must possibly exist: MoGiss said ages ago, that everybody missed a vital clue, as to how Sherlock faked his death. But, what we are discussing here, has nothing to do with the fake. And the dialog on the roof gives hints , IMO. I'm not quite sold on shenanigan's theory, how Sherlock got Moriarty's identity by scanning his iris with the hidden camera. This seems too inaccurate, but to think of biometrics in connection with Moriarty's suicide has a lot of merits.
P.S: Iris encryption can be faked (spoofed, as the technical term is) with contact lenses, but there are more sophisticated programs, which can detect the spoof. So, if there is a possibility of biometrics being involved here, Moriarty must have made sure, that only his living body could transmit them.
Last edited by sherlocked (April 15, 2012 12:08 pm)