User blog comment:Misakichii/Which Demigod will lead the 7 to the Doors of Death?/@comment-108.86.176.201-20111025235736/@comment-4395142-20111026024116

I totally didn't think of the fact that someone might have to go on the other side to get the doors closed... self sacrifice which would be something Percy will not be able to let anyone do. Which could be how he fails on this quest and how Frank who knows his duty will be able to allow.