[bubblyworld]

Ah, I think I'm starting to see where you're coming from. I'm using "reality" in the pretty narrow sense of the physical universe (Popper's world 1?), which I guess is actually quite hypocritical given that I'm also attacking the common (semi-religious) belief that everything can be reduced scientifically to fundamental physical interactions.

Ideas seem to have a dynamics of their own, and I'm pretty open-minded to the possibility that things which exist in the collective human mental substrate (world 2?) can exert causal influence of their own, in a certain sense, on world 1. In a way that maybe can't be reduced to physical interaction in any kind of useful predictive fashion?

I don't have the language to think about those concepts clearly right now!

You've left me with lots to ponder, thanks =) it's actually very cool to see Popper himself talking about the metaphysics of this stuff. Some of my physics friends would probably be a bit shocked by that...

[mistermann]

Popper's three worlds is one of my favorites to lay on science fans, because they typically love them some Popper, and an enemy in their own ranks is just too good to go to waste!! :)