Our home is on the edge of a (I suspect somewhat graded and shaped) ridge, and part of the foundation for the garage wants to move in a different direction than the rest of the place. Not badly--maybe in a decade or so we'll mudjack. Or maybe not.
That leads inexorably to the question: when you're building wide buildings on land that stands a chance of shifting in slightly different directions sometime in the next century, how do you plan the foundation to allow for movement? Cast one giant thick slab and trust it doesn't crack? Or put a buffer layer between the foundation and the construction?