World-Building is a massive topic, covering many different areas. While I agree we shouldn't just go asking a scientist what would happen if happened, I also think that world-building gets interpreted in lots of different ways. Here's just a short list:
- Dungeons and Dragon style role-playing games and the creation of the worlds they are played in as well as moderating and modifying said worlds.
- Creating a world/universe/whatever for fictional media (whether this be books, cartoon, tv, movies, games, etc) and helping to define the different features of this creation.
- Creating a world within a sandbox-type game such as Minecraft or Terraria and helping to define the features, characters or missions of said world.
I could keep going, but I think the point is made. This proposal needs definition. Real definition.
I think that definition should be discussed further here.