“ Village has a nearby natural substance that comes from the ground and burns well when lit. They use it only locally and try not to let the secret get out.”
“ Societies of beings who in some way reflect the dogmatic, superstitious, religious, idiotic, political, etc. views of large (or small) groups of people in real life.”
“ On a planet with an ammonia atmosphere, that is inhabited by intelligent aliens, the police carry oxygen spray, that has the same effect on that planet that pepper spray does here.”
