Your past actions are the best predictor of your future decisions. Your past actions – or the memory of your past actions – have always been immutable. But what if they weren't? What if marketers could meddle with your memories and insert product placements where they weren't before? Who would we be? What implications would it have for how we live? What if this wasn't all hypothetical? In this talk, Aza Raskin will tell you how to do the meddling, so that we can figure out how to stop it. Otherwise, our memories won't be pristine for long.