I had a dream the other night where something funny happened and I actually laughed out loud, waking myself up. I asked my wife the next day if she heard me -- she didn't.
Anyway, the point of this is that in my dream, I was visiting a fictitious location that I had visited once before, in a previous dream. At least I think I did.
It got me thinking... did I really visit this location in another dream, or did my brain simply create this memory of being there before?
Then I started to think about it even more. How often are recurring dreams actually a recurring dream? And how often are they a fictitious memory created by your brain?
Did that make sense?
Of course, if you tell someone about your recurring dream on more than one occasion, then they are in fact separate instances of the same dream. I mean, there's no way for your brain to plant a memory in someone else's brain.
That's just crazy talk. ;)