can anyone tell me if its possible ro not?

surley there must be a way to mess with the code so all things become hostile...

i tried this but they werent hostile...is there a sure-fire way to make them hostile when you first start out?

i was thinking of ways to make an elevator so goblins wouldnt be able to reach all of my fortress no matter how many trolls they had. and i came across the idea of a 4-6 Z-level deep pit that would be connected to a river and would pump water up to a certian point.

the only thing that i can think would be a problem would be....if there is more then one z-level of water, will dwarves float to the top?