You should only step aside and watch them work silently. This trick has only one way in. Is there no other way out? Take the police as an example. Using traditional heuristics, policemen can spot any dead volcano -- as long as it never attempts to look alive. But believers try to make it look so by erupting at his side. This stratagem should bear fruit, in theory. But their opponents... They are evil : during a war, they usually put some pieces of fire around the castle until it is only possible to walk there by knowing the position of them and avoiding them. Otherwise, the whole place really stinks.