User blog comment:Percyjackson maximumride/Jason's Memory/@comment-1515612-20111212042355

They used Percy's fatal flaw to motivate him (he doesn't let his friends down). He had a goal that he was reaching for - that goal happened to be finding Annabeth. Unlike Jason, who's only memory was Thalia, but he didn't know it until he saw a picture of her. After 8 months Jason probably has all of his memory back if not the minute he gets to camp he will remember it all.