Well...to keep native elements out, that's an easy one - Asgard's at war, isn't it? It makes sense to take precaution against the things you know can hurt you. But letting things from other worlds through...maybe it helps keep us here? We're not native. Other things could end up slipping through on accident, too.
[Voice | Day of return from the hippie trip]
Well...to keep native elements out, that's an easy one - Asgard's at war, isn't it? It makes sense to take precaution against the things you know can hurt you. But letting things from other worlds through...maybe it helps keep us here? We're not native. Other things could end up slipping through on accident, too.
This is all a wild, ridiculous guess of course.