I like that too, although it makes the whole idea much more confusing. In the last set of chapters, I was wondering what would happen if Harry and Dumbledore hadn't followed Ogden down the lane? Do they just get dumped out of the memory? Or are they forced to string along?

Also, I think it's high time Dumbledore teaches Harry how to leave Pensieve memories. He's never done it on his own, I've noticed.