What are the principles of worldbuilding?

When someone starts a project of building a fictional world, what are the principles that guide the process? <br><br>To me, it seems that the key principle is that the world should be consistent. The worldbuilding should strive for self-consistency, and the events that occur within it should follow a consequential logic. <br><br>Are there other principles that guide the process, or that you use when building your world?