Still, though, I can't be sure if the zoo as I recall it was really like that. How can I put it? I sometimes feel that it's too vivid, if you know what I mean. And when I start having thoughts like this, the more I think about it, the less I can tell how much of the vividness is real and how much of it my imagination has invented. I feel as if I've wandered into a labyrinth. Has that ever happened to you?