User blog comment:SayuriDarling/The Blood of Olympus Official Discussion/@comment-1820614-20141112033720/@comment-4902593-20141115153441

I found Zeus' reason valid, but he shouldn't have been so complacent when the Giants were already on the roll. This also contradicts his character in mythology,  where Zeus can actually control the Fates of Greek Heroes to a certain extent. Here, in PJO universe,  Zeus is shown to be really lazy, often having his royal butt saved by demigods.

What was he doing between the events of the Lost Hero and the Son of Neptune? Time pass?