Frost gives the not at all sarcastic or joking answer of "Perhaps you're hiding, even from yourself." (And if asked, he'll explain that he happened to... appropriate some memories that tell him that there are some Sidereals that have done this. He's not sure how, and thinks it's quite the nifty feat, but apparently, it's done. At great risk to yourself when somebody figures out what you've been doing. Possibly. According to rumor.)<br/><br/>And besides, there are places where Fate goes thin, and perhaps you lost your memory in one of those places. It would explain quite a bit.