Do some research dude. They are there to make sure that the enemies and companions don't run into issues with pathing. Obsidian was not writing a new engine, they used an existing engine and had to make due with what they had. However, it would have been nice if they made it a little more realistic by placing visible barriers that obviously couldn't be climbed.
I agree with 100% that.
But im also 70-30 on this topic.
I already have problems with my companions having problems walking over rocky or hilly terrain. And GOD forbid any thing higher then 6in you can just forget about it :shakehead: . So i don't have a problem having them there and half the time they are in places that have no perpouse or go NO where. and the map is so large i just tun around see something else and forget about it but that might just be my ADD.
The same time if its about your companions or CPU not able to go there O well to bad i think you should still be able to go if you loses you companion to bad.
But if that give you a unfair advantage in that. if there is a CPU that is trying to kill you or you can set up in that area where they cant go and you can just kill them then ok i can understand that.
BUT i dont see these inviable walls as a HUGE issue in the game it doesn't break the flow of the game for me. or just throw some bigger walls, hills building, mountains any thing.