7 Deadly Sins of Worldbuilding

Following the Golden Rules of Worldbuilding, io9 offered up 7 mistakes that writers forget about.  These are perfect for vetting your chosen RPG setting.

1. Not thinking about basic infrastructure
2. Not explaining why events are happening now
3. Creating fictional versions of real-life human ethnic groups that never go beyond one dimension
4. Creating monolithic social, political, cultural, and religious groups
5. Inventing a history that is totally logical
6. Not really giving a strong sense of place, like what it smells like after it's been raining
7. Introducing some superpower, like magic or insane tech, without fully accounting for how it would change society

For detail on each entry, follow through to io9.