This is driving me mad, so I just decided to make a thread about it, even though it's a rather small problem.
My scientist absolutely refuses to respond to any scripted_sequences that are outside of his view. Even if they're just around a tiny corner, 128 units away. At first I just thought, oh, it's quite a walk, maybe they aren't designed to move that far on their own...but then I put a different scripted_sequence at every frickin' corner, and he still can't walk the whole way to the place I want him to walk to. I have a sufficient network of nodes, maybe even too sufficient, with one placed about every 128 units. I have another map where Barney walks pretty far with nothing but a really rough node layout.
So, is this just a known problem with the AI of monsters, or is this abnormal in any way? Placing a bunch of scripted_sequences doesn't work so well, because the subject will pause every time they hit one. I guess I've never even needed for my monsters to walk this far before, so I've never encountered anything like it.