Board Thread:General Discussion/@comment-130.245.192.22-20170629055623/@comment-26397825-20170629203452

But in a world that is powered by dust, to the extent that they are completely reliant on it for everything, why wouldn't they use Dust for barriers? They've already shown that literally the first answer to every problem technologically is dust - it provides their electricity, powers their trains, fires their weapons, everything.

The only tech we've seen that isn't really dust is Hardlight, and that's a solid, always visible thing unlike the barriers used for the barriers in Anity Colloseum.