In writing that last post I almost tagged it with "dynamic" .. but instead decided to tag it "sandbox". (A new tag on this blog - I now have to trawl my archives and do some re-tagging).
Is there a difference? In my mind: yes. A sandbox world is one which players can shape and change in whatever direction they want, while a dynamic world changes in response to player actions according to it's own rules.
The roll out of the Isle of Quel'danas content progression in response to player actions is dynamic, albeit simplistic. As is the flipping of Halaa in Nagrand. The freedom of construction of structures in A Tale in the Desert and in Second Life makes them sandboxes.
You don't however see the Second Life world develop a global warming problem or rampant wild weather in response to all the rampant development going on. When a Second Lifer plants a thousand trees on an island you don't see a change in the wildlife. Thus, SL isn't dynamic.
There is of course potential for a huge overlap, and a world which is bother dynamic and a sandbox would be a very interesting place to live and play.
What do you think? Do these distinctions between the terms make sense to you?
How much quest direction do you want on the map? None? A perfect "X" every location? Something in-between?