Not sure if I can even explain that. I have wierd problems.
Let's try an analogy.
- There is a room. On one side of it, a couch and television. On the other, a refigerator full of wholesome tasty goodness.
For the purpose of this analogy, I live in this room, and my life consists of watching TV on the couch and getting food from the fridge. I travel the same path between these two points, and have never considered changing it. In fact, I've videotaped myself walking to the fridge and back, and that's actually what I watch when I'm sitting at the TV.
Now. Imagine that somone's rearranged all my furniture. The TV's now in the center of the room, and the couch is rotated to match. I also have a new VCR.
I sit uncomfortably on the edge of the couch, my body twisted to watch the TV while facing the direction it was before. I stare helplessly at the VCR remote - there's a "channel up" button where "play" used to be. Half of my life is ruined now. I walk to the fridge to console myself with food.
Only, I never get there. Instead, I bump into the television and knock it over.
This is not good.
Fortunately, nothing's broken. I set the TV upright again, sit back on the couch to make sure everything's okay, and then head for the fridge.
I walk right into the TV again. I had a feeling that would happen. Saw it coming as I approached, but I kinda thought it'd move out of the way.
Well, now I have no idea how to get to my food. I'm going to starve to death.
But... This used to work! I'm not imagining it.
Just to verify my own sanity, I pop one of the old tapes in the VCR and jab frantically at the remote until something comes onscreen.
As expected, it's a tape of me, watching another tape (of me on the couch, reviewing tapes).
Only, it shows the television as being in the center of the room. Which is a little creepy, because it was against the wall when I filmed this. And stranger still, me on tape is sitting comfortably on the couch, facing the TV directly. That's never happened since they moved it!
I watch in fascination as this parallel-universe copy of myself stands up, walks confidently past the television, and gets himself something to eat.
So, that's how it's done!
I watch a few times to make sure I've got it, then try the same thing, retracing the steps as I saw them in the video.
I knock the TV over again.
Back to basics. I eject the tape, and put it in my old VCR. Rewind. Play. It shows the room in it's original configuration, me sitting comfortably facing the TV, then walking to the refrigerator, unimpeded by physical objects.
I tape myself walking headlong into the television again, and put that tape in the old VCR. It shows me walking hesitantly through the empty space in the middle of the room.
I try again, throwing myself harder into the obstacle, and check the tape. Virtual me has made it to the refridgerator, but doesn't know to open the door.
With some effort, I'm able to walk him through making a sandwich and returning to the couch.
This doesn't help me out here, though. But, what if...
I pop that tape into the new VCR, and watch myself merge with the TV, walk past the fridge, and through the wall (warping it behind me).
I can do that?
Apparently. It's right there on tape.
But, then, so's me walking around the television, and that can't be done either.
The analogy doesn't make a whole lot more sense than what's actually happening, I'll grant you. But maybe you can empathize now, having tried to read it.