In What Kate Does, Dogen gives the pill (poison) to Jack to give it to Sayid. He said that he needs to swallow it voluntarily. Later, Jack swallowed the pill (voluntarily) so Dogen reacted. So my question is: Did Dogen give pill to Jack cause 'candidate can kill canditate' or because 'canditate cannot killhimself except by doing it volunterily' -> this condradicts to the dynamite when Jack was about to blow himself - the dynamite just extinguished. But if the 'canditate cannot killhimself except by doing it volunterily' isn't right, then why would Dogen react on Jacks swallowing the pill...he wouldn't die.