And then, of course, there are dreams where we sometimes "fetch" things that are not part of our experienced reality... but seem to be made up from... from... from... what, exactly? I may have never even seen a photo of a certain building in another country, yet I dream of walking through it and can describe the rooms, the colors, everything. What database does that come from?

And when, I wonder, will science be able to monitor a person who is sleeping, and simply through brain activity, be able to project the dreamer's inner vision onto a screen for others to see.

I know it's a little "off topic" here, but still somewhat related.